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How to clean brass coins

Brass coins are quite common in many coin collections, but they may look a little worse for wear after a lot of time in storage. Brass is a rather delicate metal, but you can easily clean it with some household items.[1] Set aside a few minutes of your day to clear away dirt and rust so that your coins can stay in good condition!


[[[[Edit]Remove dirt and grime

  1. Rinse your coin with warm, lukewarm water. Keep your coin underwater to get rid of all obvious dirt, rust and grime. If the coin still looks visibly dirty, rub and clean the surface with mild soap and a soft cloth. Try not to rub the surface too much, otherwise you may damage the coin.
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    • Do not confuse rust with patina! Patina is a natural, beneficial, green shade that older metals can develop over time, while rust actively damages the coin. Patina can protect your brass coins from rust, so you do not want to wash it off.[2]
  2. Examine the coin with a magnifying glass to find dirty stains. Hold the glass over the surface and edge of the coin to detect stubborn pieces of dirt or rust. Focus especially on the edges when looking for dirt on your coin.[3]
    Clean Messing Coins Step 2.jpg
    • Do not be discouraged if your coin is still dirty. Cleaning brass can mean a lot of trial and error before you get the results you want!
  3. Remove dirt and grime with a wet toothpick. Soak 1 end of a toothpick in warm water and gently drop the pieces of dirt and rust. Try to lift and push dirt away from the surface. Do not scratch or scratch the problems, as tempting as it may be.[4]
    • Scraping the coin can damage the metal.
  4. Release the coin with a soft cloth or allow it to air dry. Wipe both sides of the coin as well as the edge. You can also place your coin in an open area where it can dry off naturally.[5]
    Clean Messing Coins Step 4.jpg
    • Wipe your coin in direct sunlight – do not worry, it does not damage the metal at all.

[[[[Edit]Give your coins a deep purity

  1. Wash your coin with a baking soda. Mix hot water and 1 tablespoon (g) baking powder in a bowl until the ingredients form a thick paste. When wearing gloves, cover your fingers with the paste and rub very lightly over the surface of your coin. When the brass coin is completely coated, rinse it with cold or lukewarm water and let it dry.[6]
    • You do not need to let the coin soak in the baking soda paste at all.
  2. Rub a dot of regular toothpaste on your coin to clean it. Squeeze a small, pea-sized amount of traditional toothpaste on the tip of a glove. Gently knead toothpaste into the surface of the brass coins and then rinse it off with lukewarm or cold tap water.[7]
    • Stick to regular toothpaste instead of a special mark.
  3. Soak your coin in ketchup for 10-20 minutes. Place your brass coin in a plastic cup or container. Cover the coin with plain ketchup and then let it soak for at least 10 minutes. Once the coin has soaked, rinse it in cold or lukewarm water.[8]
    • You can add a spoonful of water with your ketchup cup so that it spreads better over the surface of your coin.
  4. Clean the coin with lemon and salt. Slice a lemon in half and dig out some of the seeds in the middle. Sprinkle a pinch of salt over the sliced ​​portion of the lemon and then rub lightly fruit over your coin. Once you have gone over both sides of the coin, clean it with a very soft cloth to get rid of the residue.[9]
  5. Cover your coin in a mixture of salt, white vinegar and flour. Mix white vinegar, 1 teaspoon (2.6 g) white flour and 1 teaspoon (5.9 g) salt together in a small bowl. When wearing gloves, lightly cover the coin with pasta and let the mixture soak for an hour. Rinse it with lukewarm water, then repeat the process on the other side of the coin. Wipe the coin with a soft cloth or allow it to air dry.[10]


  • You do not need to clean your brass coins! Many older coins are more valuable when they look naturally worn.[11]
  • If you are a big coin collector, you can clean your brass and copper coins at the same time.[12]


  • Do not use cleaning products such as detergents, waxes or bleaches to clean your coins. Brass coins are quite delicate, and these cleaners can do more harm than good.[13]
  • If you work with really old coins, consider sending them to a numismatic professional.[14]
  • Do not store your brass coins with other types of metals. This can cause your coins to oxidize and rust.[15]
  • Avoid using PVC packages to store your coins, as these can cause long-term damage to your coins.[16]

[[[[Edit]Things you need

[[[[Edit]Remove dirt and grime

  • Hot water
  • Magnifying glass
  • Toothpick
  • Soft cloth

[[[[Edit]Give your coins a deep purity

  • Baking powder
  • Water
  • bowl
  • Toothpaste
  • Ketchup
  • plastic Containers
  • Lemon
  • Salt
  • white vinegar
  • Flour


  1. https://en.numista.com/numisdoc/cleaning-coins-for-beginners-199.html
  2. https://en.numista.com/numisdoc/cleaning-coins-for-beginners-199.html
  3. https://en.numista.com/numisdoc/cleaning-coins-for-beginners-199.html
  4. https://en.numista.com/numisdoc/cleaning-coins-for-beginners-199.html
  5. https://en.numista.com/numisdoc/cleaning-coins-for-beginners-199.html
  6. https://en.numista.com/numisdoc/cleaning-coins-for-beginners-199.html
  7. https://en.numista.com/numisdoc/cleaning-coins-for-beginners-199.html
  8. https://m.youtube.com/watch?v=yPgESRqcJvs&t=1m44s
  9. https://www.bobvila.com/articles/how-to-clean-brass/
  10. https://www.bobvila.com/articles/how-to-clean-brass/
  11. https://en.numista.com/numisdoc/cleaning-coins-for-beginners-199.html
  12. https://m.youtube.com/watch?v=yPgESRqcJvs&t=1m16s
  13. https://en.numista.com/numisdoc/cleaning-coins-for-beginners-199.html
  14. https://en.numista.com/numisdoc/cleaning-coins-for-beginners-199.html
  15. https://en.numista.com/numisdoc/cleaning-coins-for-beginners-199.html
  16. https://en.numista.com/numisdoc/cleaning-coins-for-beginners-199.html

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