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Nowadays, a single coin can no longer buy many things, so many people often put the coins in a jar and save it until there is a larger amount. Or worse, the coins just kept piling up in the drawer and becoming sticky. However, it is better to clean and polish the coin so that it can be used or played when needed. Note: For US coins issued after 1982, you should use method 5. Do not clean these coins with other methods!
Steps
Use vinegar and salt
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Stir 1 teaspoon (5 grams) of salt into 1/4 cup (about 60 ml) of vinegar . For many coins, you’ll need to mix 1 tablespoon (15 grams) of salt with 1/2 cup (about 120 milliliters) of vinegar to get the effect. Remember to stir the mixture until all the salt has dissolved.
- If you don’t have vinegar, you can use lemon or orange juice. Copper oxide (the coating on the coin) dissolves in weak acids – these are the three solutions mentioned above. [1] X Research Source
Put the coin in vinegar or lemon juice. Make sure the coins do not overlap.
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Leave the coin in a cup of vinegar or lemon juice for about 5 minutes. If the coin is very dirty or many coins are cleaned at the same time, you can extend the soaking period for better effect. [2] X Research Source
- For coins with stubborn stains, you need to use a brush or toothbrush to handle them after soaking in the solution.
Take out the coin and wash it . Let the coin dry for about 5 minutes to prevent water from remaining. Now your coin is as bright as new.
- If not washed, the coin will have a blue layer (called malachite) due to the reaction between copper, oxygen and chlorine (in the salt). [1] X Research Source
Use ketchup/Tabasco sauce
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Prepare a cup and some ketchup. This method also works with Tabasco sauce. Both of these sauces are acidic, similar to the salt and vinegar method (because ketchup is salt and vinegar with tomatoes!). [3] X Research Sources
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Pour a moderate amount of ketchup into the cup to cover all the coins. As noted, this method leaves a ketchup smell on the coins after the operation is complete. Tabasco sauce, on the other hand, makes the coin orange. However, the coin is still as clean as new!
Put the coin in the sauce and wait for about 3 minutes. If you have a toothbrush (no longer in use), after 3 minutes, use the brush to scrub every small nook and cranny on the coin.
Wash the coin with hot water. If you’ve used an old toothbrush, don’t forget to clean it too!
- If the coins are clean but not shiny, make a mixture of baking soda and water to scrub the coins. Finally rinse and you’ll have shiny coins!
Use Coca-Cola
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Prepare a can or a bottle of Coca Cpa . It is not necessary to choose Coca Cpa because using the same product is also effective.
Arrange the coins on the plate so that they do not overlap. The acid in Coca Cpa needs to be reacted directly with each coin. [4] X Research Sources
Just pour into the plate a sufficient amount of Coca Cpa to cover all the coins. You don’t need to use a lot of Coca Cpa and can drink the leftovers!
Soak the coin for about 4-5 hours. For best results, you should flip the coin after it has soaked for half of the time. This method is effective but takes more time than other methods.
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Remove the coin and rinse with warm or hot water.
Use metal cleaning products
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Prepare metal cleaning products (such as Bar Keeper’s Friend). This is a quick and effective cleaning solution for copper metals, such as coins and the bottom of copper pots. If you can’t find the above product, other products (like Brasso) also work.
Wet the coin and put some metal cleaning product on it. The oxalic acid will loosen the coating on the coin after a few minutes.
Gently rub and rinse the coin. Now your coin is shiny enough that it can be used to signal planes, call Batman or dazzle. This has never been so simple!
Use an eraser (for US coins issued from 1982 onwards)
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Take a dirty coin and eraser. While this method works for all coins, it is safe for new coins while the other method is not. Acids in methods 1 to 4 will turn a zinc coin black .
- After 1982, copper material cost too much to make coins of low value. So zinc material (a cheaper metal) was used.
Rub the eraser on the coin the same way you would erase a pencil mark on paper. [5] X Research Source If you have the equipment available (or if you have to clean a thousand coins), you can attach a pencil (with an eraser) to the drill to do this. It’s great that you can create an electric eraser. It’s unbelievable!
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Flip the coin and repeat the above steps if necessary. This takes about 10 seconds per coin. The only downside to this method is that your hands will be very tired after the cleaning is finished and you will lose an eraser or two on the pencil! However, this is a quick and simple method to clean coins.
Advice
- Try cleaning 25 cents, 10 cents, and 5 cents using the methods above.
- You can use tamarind juice instead of vinegar or lemon juice.
- Use American 1p, 2p, 5p, 10p, 20p, 50p coins and British 1p and 2p coins.
- Wash the coin with dish soap if you don’t have vinegar.
- Hand sanitizer is suitable for use on most pre-1982 coins.
Warning
- If you clean the coins in the collection, you will reduce their value and cause damage.
- Do not mix coins. Only deal with coins of the same type so that other coins of different types are not discolored.
- Vinegar dissolves zinc. If your coins are scratched and issued after 1982, they may have holes in them. [6] X Research Sources
Things you need
- Coin (note the year of issue)
- Plate
- Mild acid solution or eraser
- Water (for washing)
X
wikiHow is a “wiki” site, which means that many of the articles here are written by multiple authors. To create this article, 124 people, some of whom are anonymous, have edited and improved the article over time.
This article has been viewed 23,073 times.
Nowadays, a single coin can no longer buy many things, so many people often put the coins in a jar and save it until there is a larger amount. Or worse, the coins just kept piling up in the drawer and becoming sticky. However, it is better to clean and polish the coin so that it can be used or played when needed. Note: For US coins issued after 1982, use method 5. Do not clean these coins with other methods!
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