Cleaning of coins at home is a simple set of works, the need for which is due to the oxidation of almost any metal for a certain period of time.
Those who know the specifics of various metals, in particular, copper, gold, silver, etc., are aware of the fact that the older the coin, the stronger the oxides appear on it.
Pursuing the cleaning of coins from copper and other materials on their own, without recourse to specialists, you need to follow simple rules to avoid damaging even the oldest coins.
Spending money on purchases or do we manage handy means?
Specialized solutions intended for cleaning procedures were developed taking into account the specifics of each specific metal: copper, silver, etc. Each of the products on the shelves of hardware stores allows you to remove various contaminants and uneven patina and oxides from the coin surface.
However, in an effort to restore copper and other metals in pristine radiance and purity, not everyone can afford to purchase these rather expensive solutions.
Therefore, most ordinary consumers decide to tidy up the copper surface of the coins with the help of more affordable and less expensive means.
Alternative cleaning methods that are acceptable for home use allow you to clean almost any contaminated copper coin.
The list of necessary funds available in most households is as follows:
With the help of each of them, many ordinary consumers were able to clean copper surfaces of coins and other products made from this and other metals without undue hassle.
The algorithm for cleaning coins from copper and silver is characterized by the same simplicity and affordability as similar copper products. Numerous online resources contain all the necessary information.
The following review is devoted to the task of cleaning copper coins in various ways.
Citric acid for purity and shine of copper coins
The preparatory stage is the search and selection of capacity, the possible material for the manufacture of which:
To clean the copper coins, except citric acid, you need to prepare more and water. Acid is poured into a bowl and diluted with water. Coins are dropped into the solution.
It is necessary to take into account the sufficiently strong aggressiveness of the solution - the cleaning process should be carried out under continuous control.
From time to time the product needs to be turned. Negligence and neglect of this requirement can lead to the fact that the solution can clear the coin down to the metal.
After it was possible to clean the entire surface of the product, remove the pollution completely, it is desirable to impose an artificial patina.
Option number 1
This method of cleaning is considered the most gentle and safe for the subject. As a rule, in this case, it is used not a household, but a neutral baby soap.
Having decided how to clean the coins, the soap must first be rubbed on a large or medium float. Then the rubbed soap is diluted with a small amount of water - until a homogeneous mass of plastic type is obtained.
To clean the coins, they are inserted into the resulting soap mass. Leaving the products in this state for some time, however, it is necessary to periodically pull them out of the water and check, washing away the layers of dirt and oxides.
Option number 2 (optional)
You can also achieve the desired goal by resorting to laundry soap. The process is somewhat different from the same, above, but also simple.
In this case, a plastic container is used as a container. It is filled with boiling water, which is filled with soap shavings.
Having waited for the soap to completely dissolve and to obtain a jelly-like substance, the owner can drop copper coins into it, leaving two or even a day to complete. The duration of stay in the solution depends on the degree of contamination of products.
After the required amount of time has passed, the money should be rinsed by resorting to a soft brush and dried properly.
Multiple repetition of the procedure is allowed. By removing all oxides layer by layer, you can get coins with a completely clean surface and without any damage.
Effervescent Coca-Cola: Spend Money to Clean
The ambiguous properties of the drink loved by children and adults have also been applied in the struggle for the purity and shine of specular coins.
Many already know that with its help you can perfectly clean and gloss over the chrome-plated surfaces of various products. No less successful is the cleaning of old coins at home.
So, in order to clean a polluted and dull coin, it must be dipped in a container, preferably a glass one, and filled with a fizzy drink. Dishes and its contents are left in this state for several days, best of all - for a week.
With a lack of patience, the time required to peel coins can be shortened considerably. For this, dishes are placed on a battery or other safe and efficient source of heat. The essence of the approach is that increasing the temperature accelerates the reaction.
Those who pay due attention to this lesson are familiar to physicists from school. Its benefits in processing coins will be provided subject to the following two important rules:
- compliance with safety regulations
- testing the method on inexpensive copies, in order to avoid damage to more valuable products.
Special attention should be paid to the second point of the principles of work: the fact is that sometimes, due to a minor mistake, a serious, irreparable harm is caused to a coin or other valuable product.
Old coins are restored in terms of purity and brilliance through the use of a small power supply (6-12 volts). As such, universal charging can be used. Another alternative: an old charger from a mobile phone.
The following are attached to the power supply unit or its alternative variant:
- two crocodile clips,
- some small metal object (not recommended from copper or brass),
- deep dishes made of glass or ceramics.
Salt solution prepared in compliance with the following proportions is also used: 1 tablespoon of salt per 1 liter of water.
The process is simple, you only need to accurately perform all the steps. One clip — with a minus sign — is attached to the specimen, while the opposite clip — with a plus sign — is attached to a metal object.
Then the coin and the metal product are lowered into the previously prepared container, where the brine is located, while the power supply is plugged into the outlet.
The result makes itself known quickly enough: the process of dissolution of oxides and dirt leads to a rapid turbidity of the solution. The “bathing” period is short, after which the specimen is washed with hot water and dried.
A little care and clarity of performance of all steps will allow to achieve the desired results.
Mix soda and soap
If you want to achieve the desired purity in the shortest possible time, then the method with soap can be enhanced by using soda. However, you need to add soda in a dissolved form.
After completing the cleaning, the coins should be rinsed properly, and then lubricated with alcohol and petroleum jelly. The last step provides maximum protection against the emergence of new pollution and oxidation.
In this case, you need to boil the coins in the oil tool. The best option: the use of vaseline oil. The process of boiling should be brought to the absolute purification of coins. The last step: washing in ethyl alcohol.
If the coin is brought to an extreme state: it is unusually heavily polluted, you can resort to caustic soda. Handle the tool must be very careful, it must be diluted in cold water.
Since this tool is inherently a strong alkali, it is recommended to avoid contact with it. Lower the product into the solution using tweezers. Stay in solution: no more than ten minutes, after which the coins are drawn and washed.
However, not all coins can transfer this method. If a green or blue stain is noticed on their surface, the cleaning process should be interrupted. In case of a negative reaction, this method should not be applied to already tested products.
You must also take care of your own safety - especially when using certain methods.
Clean, shiny and sparkling coins delight with their appearance as experts and connoisseurs of these products, as well as ordinary users, who for one reason or another are interested in cleaning reusable coins from copper and other metals.
What should remember a newbie
Of course, it’s better if your rarities are cleared by a professional, but you can easily cope with this task yourself. To begin with, a numismatist needs to remember that the natural oxides on an ancient copper coin, which have a dark brown and sometimes black color, are called patina. They can not be deleted! They not only give value to your rarity, but also protect it from the destructive action of the environment. Consider the patina - if it is flat, then simply wash your coin with warm water and wipe it with a soft cloth.
Citric acid helps in cleaning coins
In cases where the oxide layer is uneven and thick, it should be removed. There are several ways to do this. To get started is to learn how to clear copper coins with citric acid, which can be purchased at any supermarket.
- Dissolve three parts of the acid in seven parts of water, thus obtaining a 30% solution.
- Put a coin in it and wait no more than 15 minutes.
- As a result of a chemical reaction, purification will occur, and dirt will rise to the surface.
- Do not worry if the coin acquires a pinkish tint - it will change in a few weeks.
- After restoration with acid, the coin must be washed in water with alkali-containing soap in order to stop the effect of the acid on the metal.
Sometimes for the best result, a repetition of the cleaning process is required.
Is it possible to use soap?
Cleaning the collection can be done in another, safer way. Numismatists know very well how to clean copper coins with soap. To do this, it is planed on a fine grater and a solution is prepared (ratio: 1 part of soap and 8 parts of water), stirring it thoroughly. Coins are placed in soapy water for two weeks. Periodically, water is set on fire and heated, not boiling. Dirt from the coins during this time will begin to descend, although sometimes (especially if the oxide layer is thick), additional efforts have to be made to clean it (for example, to clean them with a soft toothbrush), but most often it is enough to wipe this coin with a cloth.
By the way, with the help of soap it is best to restore old royal coins and Soviet coins issued before 1924. A more modern cleaning can be spoiled!
How to clean copper coins from greenery and other stains
In order to rid the collection of material stains, it can be boiled over low heat in oil. A good result can be obtained using liquid paraffin, as it has a rather high boiling point. Namely, it is required for successful cleaning.
Coins are kept in boiling oil for 10 minutes, do not forget to just cover the container with a lid to avoid soot. They are then allowed to cool and washed with soap. Do not forget to dip the coin for a few minutes in ethyl alcohol to remove the fat. After this procedure, it can take a worthy place in your collection.
How to clean copper coins from oxidation
If the coin is covered with a dark cherry bloom of copper oxide, then it can be removed by immersing the coin in a 15% ammonia solution (a 10% ammonium carbonate solution is used instead, which is less aggressive with respect to copper).
A dark green color indicates the presence of carbon dioxide. This plaque is removed with citric acid (and how it was described above). A less aggressive way is considered keeping coins in kefir for 2-3 hours. Do not forget to periodically look at how the process of purification.
Sometimes there are also coins that are covered with a pale yellow lead carbonate coating. This, as a rule, indicates that a lot of the mentioned metal was in its alloy or that it lay for a long time with lead objects. This plaque is well removed with a 10% acetic acid solution.
What to do if rust appears on a coin
If you are concerned about how to remove rust from copper coins, you will have to use a slow-acting reagent. This is "Trilon B." The thicker the rust layer, the longer the coin will have to lie in the reagent.
And some coin collectors recommend cleaning with Coca-Cola. This method even though it seems somewhat strange, but, nevertheless, is very effective.
We dry coins after cleaning
After you have managed to clean the copper coins of dirt and oxides, they need to be dried. To do this, it is best to use paper towels folded in several layers, and on top cover your cleaned old object with another towel. Use only soft for this - so you will not scratch the surface of the coin! By the way, it can be completely dried in a drying cabinet at a temperature of 100 ° C. And in order to prevent and slow down the oxidation processes, periodically rub the collection material with a crumpled newspaper.
What to do if the copper coin has lost its noble patina?
If you are still overdone or for some reason you had to completely clear the coin, you can restore the patina layer by artificially aging the product. True, the peeled coins eventually acquire a patina themselves, but it may look uneven and this greatly spoils the appearance of the collection material. In order to avoid this, the coin is degreased and lowered for 15 seconds in a 10% hyposulphite solution, and after drying it is rubbed with a soft cloth. The described operation will help appear on the subject of antiquity smooth and beautiful patina.
If you still know in practice how to clean copper coins, then you should practice on less valuable items and only then go on to the most expensive items of your collection. In the case when the coin became unnaturally light as a result of cleaning, place it on a sunny window sill, where in a week it will get its normal appearance. True, we must not forget to turn it regularly.
If you come across a coin struck by the so-called "bronze disease", then it is better to give it to a professional restorer. This can be distinguished by oxides on its surface, similar to light green grains. And the coin itself, as a rule, is badly damaged and crumbles, if you take it in your hands.
A few words in the end
We hope that after reading this question, how to clean copper coins at home will not seem too complicated. But still I want to warn you that the most expensive and rare copies of your collection should be given into the hands of a specialist. Otherwise, it may be that your rarity is hopelessly ruined.
By the way, tooth powder, paste, salt, baking soda and sand are substances that can cause irreparable damage to the appearance of collection material. After all, all this is abrasive substances that can scratch the surface of the coin and, accordingly, reduce its value.
Good luck in the restoration and collecting!
Features of cleaning coins
Over time, any coins begin to rust, and many collectors find it important to clean the coins to make them look presentable.
To clean the coins at home requires compliance with all sorts of rules.
Cleaning the house is simple and easily accessible for everyone.
You can also rely on professionals to ensure the cleaning of coins from more expensive metals, which are covered with a layer of oxide and require proper experience. In the case of self-cleaning coins, you must use the best cleaning tools.
You can clear copper using the following guidelines:
- Lemon acid,
- Soap solution
- Cooking in baking soda,
- Trilon B,
Since the coins may be old, it is allowed to use the above methods, but very carefully.
If a green dirt has accumulated on the coin, then the safest method is to leave the coins in kefir for three hours or soak it in a soapy solution using baby soap.
Also effectively relieves ammonia from plaque on the coin, in time enough to immerse for 30 seconds and immediately cleaned with a brush. The action is repeated three times until the coin clears completely.
Cooking in baking soda can also provide good cleaning. At 1 liter of water, add 5 tablespoons of soda and boil the coins for about 30 minutes.
Довольно результативный метод – очищение трилоном Б. Металл от использования трилона Б не разрушается и позволяет быстро очищать от различных загрязнений. После данной очистки следует сделать искусственное патинирование.
Есть несколько способов по очистки монет из бронзы:
- Lemon acid. Coins are literally immersed for 15 minutes in 30% acid with water (3: 7).
After a dive, the coin may turn pink, but do not panic. This reaction is quite predictable between acid and bronze, so after two weeks the color will appear as before.
- Laundry soap. Soap rub on a coarse grater, add hot water (1: 8), mix. Coins are placed for about two weeks.
This is enough to affect the patina with alkali. If there is a small amount of dirt, you can wipe the coin with a regular cloth. The method is used only if the coin did not initially acquire a green patina.
- Boiled oil. Bring the vegetable oil to a boil, put a coin in there and boil for 5 minutes on low heat.
After boiling, the metal must be washed and placed in ammonia.
For starters, it is best to test this method over a less valuable coin, otherwise the more expensive one may deteriorate.
Use a spoon and tweezers for the procedure with hot vegetable oil. Coins must wipe dry with a soft cloth or a napkin.
The processing of coins from bimetals is carried out very carefully, in order not to further damage the structure of the coin and its peculiarity.
- Vinegar 9%,
- Whitening toothpaste.
Coins are put in a jar, poured with vinegar at such an amount that will cover the coins.
Folk remedies for cleaning coins
There are various cleaning methods that are used at home:
- soap solution using baby or household soap, this method is suitable for absolutely all types of coins,
- boiled vegetable oil
- water solution with dishwashing liquid do it yourself,
- oven cleaners.
Before resorting to such actions, it is necessary to know from what metal the coin is made or to consult with professionals to select a cleaning agent.
Cleaning with chemicals is a popular method for recovering coins.
It implies the use of various reagents, such as: acids, baking soda, ammonia, washing powder, toothpaste and other means. If possible, you can use a solution of hydrochloric acid with pure water without impurities.
Simply put the coin in a jar of acid, and the accumulated dirt or bloom from it will come down.
As the procedure is completed, you should rinse them with alkali, in order to stop the reaction completely, dry with a normal cloth or a dry cloth. The alkali solution is soda-based solution.
Drying coins after cleaning
After the coins are cleaned, they are then rinsed in boiled water with one drop of the introduced 1.7% silver nitrate solution, after which the coin is not capable of producing turbidity.
After that, it is necessary to carry out drying in acetone, followed by ammonia after 1 hour.
For drying, it is advisable to use a thermostat, that is, a special drying cabinet, holding the coins there at a temperature of up to 100 ° C for no more than 2 hours.
To clear a copper coin, on which there are at least some signs of a bronze disease, they are immersed in a moisturizing chamber.
If copper coins have an unpleasant shine, then you can artificially create a patina from light to dark color; you must dilute to 1 liter of liquid, 50 g of copper sulfate and 5 g of potassium permanganate.
The solution is heated to 80 ° C, the coins are lowered there and held until the time of receipt of a certain color.
After drying the coins, they are covered with a protective layer, paraffin.
Another way is a solution of polybutyl methacrylate 5% in acetone, a mixture of benzene with alcohol (1: 1).
Store expensive coins should not be in heaps, and in special trays with compartments, collectible albums for coins. Thus, this is how coins can lie for a long time.
Precautions when cleaning coins
For the purification of coins, chemical compositions require a clear definition of the alloy from which the coin was made.
It is enough to dip the coins into the water and wash away the remaining dirt.
Cleaning of coins is required to avoid the formation of repeated stains. After the primary cleaning proceed to the main. Coins with tweezers laid out at the bottom of a jar of solution. Take them out after 3 minutes.
For example, bimetallic coins are cleaned with whitening paste or rust detergents. For modern coins, acetic or citric acid is suitable, which is rubbed with cotton pads, washed with warm water and dried.
Silver coins can be wiped with a cotton swab dipped in ammonia.
Preferring dry cleaning is important to observe all precautionary measures and its implementation. Any coin is considered valuable and good, when there is not a trace of dry cleaning on it, that is why avoid contamination, and carefully keep your collection, which will please you for a long time.
What coins can not be peeled?
Like all valuable coins, there are some that cannot be cleaned at home, otherwise otherwise very expensive coins can lose that part because of what they are so valued. Let's go through the categories of coins that are not necessarily or should not even be cleaned at home.
Were dismantled types of coins that are subjected to proper cleaning and types of tools that use for cleansing.
Pay attention to whether there are any scratches on the product surface, deep scratches or gouges, and whether there are any irregularities, because then you can use only the usual washing under running water.
Using a soft brush, you can remove dirt and just wash and dry the coin. It is possible that cleaning with any reagents or abrasives will spoil the product and make it unsuitable for collection collection.
Where can I go for cleaning coins?
Basically, the question of where to go for processing coins appears quite often, but no one can give an exact answer to it. When a hole is formed on the coin, you can contact the jewelry workshops.
In the modern world, there are many ways to clean up, but nowhere is it mentioned about the places where they are doing just that, so it only remains to take matters into our own hands and use various ways to purify valuable coins.
In order not to expose old coins to frequent purification, you should take good care of them and preserve them. Store in a dry place and keep away from sunlight.
Try to avoid contact with the hands of coins, they should be taken behind the edge. If it turned out that they took in hand from the front side, then rinse with soap and dry.
Proper care and respect for rare coins, pleases any coin collector with its grace and beauty. Old coins are handed down from generation to generation and can bring good profits.
General tips and advice on cleaning and storing coins
Recommendations for storage and cleaning for beginners numismatists. Valuable coins carry their history behind them and more than ever they should not be subjected to chemical or mechanical processing without the inability to properly use these methods.
If the coin is not heavily soiled, you can do it with ordinary washing using a soft brush. Polished coins with excellent quality and patina are not recommended to be processed with these cleaning methods.
It is necessary to resort to cleansing and patinating in order to improve the appearance of the coin and preserve the collections of valuable coins and to replace this instance with a more improved and high-quality one.
With the most valuable coin to address the issue of exchange or replacement of coins, you can contact those who are engaged in this service, they will help you not to spoil the type of coin and ensure safety in the collection. If necessary, this operation to provide an improved view will facilitate the implementation of the coin in the market of coin collectors.
A distinctive form for storing coins, collectors are given such a possibility of their choice at their discretion and possibilities.
Try to protect the coins from environmental impact. Changes in room temperature or as a result of human contact.
Many were fond of and fond of this occupation of collecting rare coins. It was a long time ago that one collector expression was given: “first you feed the collection, then this collection feeds you”.
Many connoisseurs - collectors who collect valuable coins seek this statement.
Preparation: Rules and Tips
Coins become dirty from oxidation. Almost all metals are subject to this process. Money that has been lying in the ground for a long time is very dirty. The older the metal, the stronger the oxide, so rare USSR samples must be cleaned for a long time and very carefully.
The first thing to do before cleaning the coins is to determine what material they are made of. Copper samples are hardest cleaned: metal should be handled very carefully. Silver coins also require accuracy. Samples of nickel silver — an alloy of copper and nickel — are easy to clean. Rare zinc exhibits are scrubbed only with very weak acid solutions.
What can and should do:
- Use protective gloves when handling acid products.
- Clean money with a cotton pad or chopsticks soaked in a solution. You can hold the disc with tweezers.
- To train on one sample, and then apply a suitable tool for the rest, more valuable.
- To clean the soaked dirt after soaking with a soft sponge or baby toothbrush.
What not to do:
- Use abrasive products. Large particles damage the coin itself.
- Use aggressive chemicals such as Komes or Domestos.
- Use hard water from the tap, which contains impurities of chlorine. This element causes the oxidation of metals.
If there are concerns about the integrity of the money after home cleaning, you should contact the professionals. Numismatists use special tools for coins. Money is enough to soak in such preparations for 3 minutes. Then the samples are washed with water and dried. This is the safest and most effective way, but the tool for numismatists will be expensive.
For cleaning, only white and homogeneous paste without abrasive granules and dyes is used. Auxiliary tool will serve as a toothbrush with soft bristles, better children.
How to clean coins with toothpaste:
- Moisten a soft toothbrush with warm water.
- Squeeze a pea paste onto the stubble.
- Clean the old coin with gentle movements. If you press too hard on the tool, microscopic scratches will appear on the metal.
- When the desired degree of purity is achieved, rinse the object and wipe dry.
Tip! Patina in some cases indicates the value of the old sample. It is optional to clean it.
General information about cleaning coins
It is important to understand that not all instances need serious cleaning, sometimes the procedure may even harm. It would also be good to learn how to distinguish patina from oxide and plaque, since it gives the metal a nobleness and protects against external factors. Every collector knows that patina coating is more important than brilliant shine.
If for the first time you try to clear old coins at home, it’s better to start with the least valuable items. In case of failure, they will not be so sorry. On them and try the method that interests you. When it comes time to work with an elevated temperature, try to ensure that the transition from room temperature to high occurs smoothly. A sharp drop can damage the metal.
When you have to use a brush, it is better to use a soft one, like a toothbrush. Do not use metal bristles or emery.
It is important to properly dry, especially old coins. To do this, they need to put on a soft cloth and gently several times attach it on top. It happens that water droplets leave their mark on antiques.
See also video: 3 ways to clean old coins at home
Start of the cleaning process
Choose a method of cleaning, depending on what type of dirt we are dealing with. There is chemical and mechanical, in the second version we are talking about dirt, dust, earth and other pollution that are mechanically cleaned without the use of special tools. The first method involves a certain chemical reaction, which will help to launder a coin from oxide, green deposits or any other.
If you have not previously worked with the methods below, clearly follow the instructions and do not overdo it so as not to damage the product. And the more you should not change the recipe or invent your own.
At this stage we are talking about mechanical cleaning. Depending on what kind of metal we are dealing with and how dirty it is, we choose the cleaning method:
- A soap solution can cope with minor soiling, using it we remove the dirt with a brush or an old toothbrush.
- In difficult cases, we do, depending on the composition of the coin. You can use the methods given in the paragraphs below.
- If the pattern on the surface is not visible, put it in a soap solution for 10-15 minutes. You can use laundry soap. After that, with the help of a toothbrush, gently wash the coin right in the water. After which we dry.
How to clean a coin found in the ground
Often, in search of old coins they are found in the ground, often such finds with the USSR. Sometimes they lie there for years and the dirt is so ingrained that it has become almost the same with the product. Cleaning such coins at home will occur by boiling.
It is necessary to make soda solution, for one glass a tablespoon of soda. A contaminated object is better to put in a sieve or something else of this kind so that it does not roll on the bottom of the pan. Bring the water to a boil and leave to boil for half an hour. Now turn off the heat source and let the water cool slightly. We take out the product and gently clean it using a toothbrush or other soft brush. We carry out the procedure as many times as the coin does not restore its normal appearance.
Cleaning with soda
In this case, we will clean the coins from oxidation using ordinary soda, which will be used as alkali. That is, the main task is not mechanical cleaning, but chemical. We make the usual soda solution and immerse the product there. The concentration of the solution depends on the complexity of the case, as a rule, 1-2 tablespoons of soda are added to a glass of water. After a few hours, we pull out, if the plaque is still there, remove it with a soft cloth and dry it.
You can make a kind of mush from soda and water. We put there coins for a certain time and periodically look after it, so that the soda does not start to dry out directly on the surface. After the procedure, remove and using a soft brush clean all residues from plaque and oxide while rinsing in water.
You can make cleaning products yourself. To do this, make a mixture of ammonia, soda and toothpaste. Having closed all this in a jar, it can be stored for a long time. Cleaning with its help is very simple, apply the mixture and wash with a toothbrush.
We clean the coin with soap
The basic method of how to clean the old coin includes a soap solution. Rub the soap shavings on a grater and soak it in boiling water so that the mixture forms something resembling a jelly. There we put a coin, cover and leave for 1-2 days. In difficult cases, add soda, 2-5% of the total mass of the solution. When time passes, remove. Rinse with wastewater and dry. Moisten in alcohol and leave to dry completely.
The best option than you can clean the old coin at home - jewelry cleaner. It can be purchased at jewelry stores and workshops. This may be a napkin or a solution. In the first case, you need to wipe the surface of the product. In the second - to load a coin there for 5 minutes.
Valuable coins better to entrust the professionals. It would be a pity to spoil antiques by their own incompetence. In the workshop not only cleaned, but also polished and can cause an extra layer of protection.
Coins made of gold are cleaned surprisingly simple. To do this, you can use one of the following methods:
- Make soapy water in a glass and add 10 drops of ammonia. Place the product there for 10-15 minutes. Wipe dry.
- To restore shine to gold, onion juice will be a cheap and effective remedy. Using a soft cloth, rub the metal surface with it and leave for a few hours. Wash under waste water and wipe dry.
- In stores you can buy a special paste for laundering gold.
Coins made of silver are distinguished by their durability, therefore it is much more difficult to damage them. It is not recommended to use soda with this metal. At first, it will cope with its task, but over time micro-scratches can form. So how to clean silver?
- The easiest way is with toothpaste (or powder) and a brush. Apply the product to the surface and scrub until it is normal.
- Make a solution of citric acid in a ratio of 1: 3. We put there our collection of coins and leave for 10 minutes. We take out and clean the toothbrush.
- Иногда чтобы вернуть блеск достаточно просто на 2 минуты погрузить в нашатырный спирт.
Если на поверхности нет повреждений, окиси и любого налета то обрабатывает механическим способом с использованием мыльного раствора. В других случаях прибегаем к одному из ниже приведенных способов.
- As in the case of silver, we make a solution of citric acid, but this time we will need a ratio of 1: 2. Put the product there for 10 minutes, rinse and wipe dry. The color may change slightly, but after a few days everything will return to its place.
- An excellent method for cleaning old gold coins is to use vegetable oil. With it, you can not only restore the appearance, but also give an additional protective layer. To do this, you need to bring the oil to a boil and gently lower the coin there for 5 minutes. Remove and immerse in ethyl alcohol for the same amount of time. Rinse and dry.
We process copper coins
On copper coins, not only oxide is possible, but also yellow, white, red and green patina.
- If the coin is covered with a red layer, a solution of ammonium carbonate or 5% ammonia will help. Immerse the object for 5-10 minutes in the solution, wipe well and dry.
- From the green will help the above-mentioned citric acid in a ratio of 1:10.
- From the yellow bloom will help ordinary vinegar. We drop a coin into it for 5-10 minutes, wipe it and wipe it dry.
- The easiest way to clean the white bloom, it is enough to take distilled water and immerse there dirty copper coins for a few days. Remove and wipe with a soft cloth.
- In especially problematic cases, use the Trilon-B tool.
Another way to clean copper coins on video:
How to clear a copper coin?
Cleaning coins is a laborious and laborious process. To clear an exhibit, you must fulfill a number of prescriptions that are mentioned in this material. Consider how to clean the copper coin at home. This will help if you need to clean copper coins from oxide, from black, from green scurf.
Analyze the degree of contamination and determine how you can help your exhibit. If you decide to clean the coins, then you can not do without soap and liquid ammonia. Chemical products must be discarded: this may damage the exhibit.
Method 1: soap and water
We take the soap (better household), rub it on the grater. Add 1 liter of water. Leave the coins in the solution for 10-15 minutes. The dirt will be sodden and can be easily removed with a sponge.
Method 2: Vinegar
Put on gloves, take a soft sponge and apply a little vinegar on it. Gently massage the wipe the coin. After that, rinse the coin under warm water to remove any residue. An alternative to vinegar can be ammonia.
Method 3: Lemon
Take a fresh lemon, cut it into 2 halves. Right in the fruit pulp, insert a coin and leave for 15 minutes. After the time, remove it and gently brush it. At the end do not forget to rinse with water.
How to clean a coin from rust?
Each collector has his own secrets of cleaning coins from rust and other contaminants. Each metal has a unique chemical composition, so you need to know what can and cannot be restored.
To remove rust from a coin, you can use:
- citric acid / juice
- laundry soap.
All these tools are used by analogy with the above methods.
How to clean a silver coin?
To date, there is no single method of cleaning silver coins at home, because everything here depends on their sample and degree of oxidation. This is due to the fact that they have a different chemical composition, and accordingly, different methods of cleaning.
Older specimens of high samples are cleaned of black for an hour with a solution of ammonia (90% water). If there is none, you can replace it with soda solution (300 g per 1 l of water), in which you should soak them for about 2-3 hours. If desired, boil the solution slightly for better effect. This should save the coin from blackness, which is important for old copies.
To clear a coin, use a mixture of toothpaste, soda and ammonia. This method is good because there are no abrasive particles in its composition that can harm silver. Apply this mass to the contaminated surface and carefully clean it with a brush.
For exhibits made of low-grade silver, the Trilon B method is suitable (Trilon B is a special kind of salt). It is necessary to dissolve 1 tbsp. a spoonful of salt in a glass of hot water, then put the coins in there and wait for the result. However, in order not to harm the metal, all actions should be carried out in well-ventilated areas. Further, this process should be continued by treatment with a special agent for cleaning a certain sample of silver.
How to clean a coin from black?
Time is one of the few causes of blackness. In this article we will tell you how to clean the exhibits from dirt. Over time, the top layer of copper oxidizes as a result of contact with air, which causes a special patina on the surface - patina. It looks like a black bloom, which can be difficult to get rid of even by an experienced restorer.
However, there are several tricks that can help get rid of this problem. Alternatively, the coin can be wiped with a cotton pad dipped in liquid ammonia, followed by rinsing in warm soapy water. The main component of this alcohol is ammonia, which due to its properties perfectly reacts with copper oxide compounds.
There is another way to clean the copper surface - a mixture of oxalic acid, turpentine, ethyl alcohol and water. This mixture can both remove dirt, degrease and remove metal oxide.
How to clear a coin from green plaque?
There are cases when you do not know how to clean the coin from oxidation. After all, oxidized coins lose their original, marketable appearance. The method of purification depends on the type of alloy itself, so you should carefully determine what type of corrosion struck the metal.
There are many types of corrosion, the most frequent ofwhich are:
- green spots are the oxidized surface of copper. It is formed as a result of a long stay in a wet and damp environment.
- the reddish bloom most commonly found on coins that were in poorly ventilated spaces
- the black color of the metal is a patina, indicating a large metal age.
There are several ways to get rid of green coverage. One of the safest is cleaning with a solution of diluted vinegar. To cook it, you need to take two tablespoons of food vinegar per liter of pure water (ideally distilled). After that, you should put the coins in this liquid so that they are not in contact with other surfaces and have the smallest area of contact with the walls of the container in which they are placed. This is to ensure that the entire surface of the coin is evenly exposed to acid.
There are many cases where large amounts of coins were placed in a small container, which resulted in uneven harassment and the formation of spots from unclean areas.
It is also necessary to clean the layers formed due to the action of the acetic mixture. This must be done several times a day, taking the coin out. Clean it with a toothbrush. But it should be remembered that excessive efforts can seriously harm the coin and form red spots that are practically not removed without mechanical intervention.
This method will help to remove both oxidation and various mud stains. But one should not forget that one should not wait for a full-fledged restoration, since the metal structure undergoes irreversible changes over time.
How to clean a bimetallic coin?
A numismatist who respects himself knows that each type of alloy requires its own approach to cleaning. The most common problem is the state of metals when one part of the coin needs to be cleaned with anti-corrosion solutions, and the other is in good condition. And if we apply the usual cleaning with acid solutions to such cases, then there is a chance to harm the second metal, which can cause such defects as tarnishing, a change in the chemical composition of the upper alloy layer, a change in the primary color.
That is why the cleaning of bimetallic coins at home may not give the desired results, but will definitely lead to their surface for a better look. For such procedures, you will need soda solution (2 spoons per cup of hot boiled water). Coin should be placed in it for 15-20 minutes. Do not forget about the above remarks regarding its placement in the tank. After pulling out, it can be cleaned with white toothpaste without dyes. If not, tooth powder can be used. But it should be noted that its abrasive particles can leave micro-scratches, so this procedure should be carried out very carefully, so as not to damage the surface and not cause microcracks.
If the above method does not give sufficient effect, you can try chemical means to dissolve limescale and corrosion. To do this, apply a small amount of gel to the surface of the coin and carefully wipe it with a non-coarse cloth. If the stains are not rubbed off, you can try the same steps, but using a toothbrush.
After properly performing these procedures, the metal should acquire its characteristic color and luster.
How to clean a zinc coin?
Inveterate numismatists also have copies of zinc. Cleaning such coins is a very laborious process. This is due to the fact that zinc actively reacts with strong acids, but its salts have poor reactivity to weak acid solutions. That is why the best option for cleaning such values will be the dissolution of a patina layer in a container with 1% hydrochloric acid solution.
Before you start the baiting of metal, it should be remembered that a coin in such a liquid cannot be left unattended, since it is required to check its condition every 5 seconds. This is necessary in order to see the moment when the patina has already descended, and the acid has begun on the base metal.
Cleaning zinc specimens at home will be much more effective if the capacity is wide enough. This is necessary in order to keep the coin in acid and at the same time brush it with a toothbrush. Hydrochloric acid differs in that:
- has different activity with metals,
- does not harm human skin,
- has a good reaction with zinc and iron.
After cleaning, the coin should be flushed from acid residues with strong water pressure. This is due to the fact that if you just throw it into the water, the acid will still be on the surface of zinc for some time. This may lead to additional harassment of the alloy, which is highly undesirable for such products.
Complete cleaning of zinc coins at home is quite a laborious task, so you should not expect a big effect. However, in any case they will gain a more attractive look and add to their value.
How to clean a coin with soap
For cleaning take any soap. The method is suitable for cleaning copper - soap will not damage the patina on this metal.
- Grate a bar of soap on a fine grater.
- Add some water to the chips to make a thick gruel.
- Put the coin in the solution and hold in it. For removing light pollution, 30 minutes is enough, the old raid will depart within 24 hours.
- When the coin is sufficiently cleaned, you need to walk on it with a soft brush, it is better dental, and rinse in clean water and then dry.
Method with dishwashing detergent
Wash copper coins without damage will help the solution from the washing gel for dishes. Means effectively removes greasy dirt:
- Solution: 1 liter of water - 1 tbsp. l facilities.
- Stir the solution and place a coin in it. Wait an hour.
- Rinse the cleaned metal and wipe dry. It does not hurt to polish a coin with a piece of flannel.
An unusual way to clean dirt from old money at home is to use Coca-Cola. This carbonated water is known for its aggressive effects, sometimes the drink is recommended as a toilet cleaner.
How to work with highly carbonated drinks:
- Pour a little soda into a small container.
- Put there money.
- Leave overnight.
- In the morning, remove the money and remove the remaining layer of dirt with a dry cloth.
- Finally rinse in clean water and dry.
Tip! "Coca-Cola" will help remove rust.
In the application of this tool should be careful. First, if you overdo the coin in the liquid, the metal will begin to oxidize. Secondly, ammonia emits a pungent odor. Need to work in a ventilated area.
Method with ammonia:
- In a wide container to pour liquid ammonia.
- Throw a coin in there and wait 3 to 10 seconds, not more.
- Remove the object from the liquid, rinse and polish with a dry cloth.
- Instead of soaking, it is allowed to quickly go over the coin with a cotton pad dipped in ammonia.
This method is used to clean silver coins. The solution removes black plaque from the metal.
Other ways for copper
For the Soviet copper coins invented many means of renewal, among which are popular lemon juice and vinegar.
To clear the lemon juice old copper money, should:
- Cut the fruit in half.
- Insert the copper coin directly into the pulp and leave for 10-15 minutes.
- Get a coin from a lemon. If necessary, walk on it with a brush.
- Rinse with clean water to remove residual juice.
- Dry the coin.
Citric acid easily replaces fresh juice. It is used when the weaker funds were ineffective.
How to use lemon:
- Dilute the powder in water in a ratio of 1: 3.
- Pour the solution into a plastic container.
- Hold the coins in the solution until the dirt comes off. It is important not to overdo the coins in acid, as this is fraught with reddening of copper.
- Another way is to moisten a cotton swab in the solution and treat contaminated places with it.
Food vinegar - an alternative to liquid ammonia. How to work with a substance:
- Moisten a sponge in vinegar no higher than 9% concentration.
- Rub a coin.
- Rinse with warm water.
- If necessary, repeat the procedure.
Acetic solution will remove greenish plaque from copper:
- At 1 liter of water - 2 tbsp. l table vinegar.
- Put money in the solution so that they do not touch each other. It is necessary for uniform cleaning.
- At intervals of several hours, remove the coins and rub gently with a soft brush.
- Keep samples in solution until thoroughly clean.
Tip! Some coins are made of two metals, for example, anniversary ten rubles. Not all methods are suitable for bimetallic coins: while one metal is cleaned, the other is damaged. To wash such coins it is better not to use acid. Suitable methods with toothpaste, soda solution.
Soda Solution for Silver
Baking soda is very popular: it is used as a cleaning agent for many business operations. To return to the silver coins of the former brilliance, the soda will also fit.
How to prepare the solution and clear the money:
- To 1 liter of water - 300 g of soda.
- Soak the exhibits in the solution for 2-3 hours.
- If the coins are too old, the solution is allowed to boil beforehand.
Cleaning Zinc Specimens
The best option to wash a zinc coin is to treat it with 1% hydrochloric acid. It is important that the solution is very weak: zinc tends to react with strong acids.
- Pour the solution into a wide container.
- Prepare a soft brush.
- Place the item in the solution. We'll have to keep track of him.
- For a quick effect, gently brush.
- As soon as the patina comes off, immediately remove the coin from the solution.
- To remove any residues, rinse the object under a strong stream of water.
Collecting vintage and new commemorative coins fascinates many. Rare money is easy to keep clean thanks to simple home remedies like laundry soap or dishwashing gel. And professional numismatists are advised to purchase a special tool in order to exclude even minimal damage from improper use of folk methods.
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