How To Clean Old Coins

Old coins can gather dirt, grease, or corrosion over time. Cleaning them can make them look better and easier to identify. However, it is important to be careful because improper cleaning can damage the coin’s surface and reduce its value, especially for rare or collectable pieces. Below is a safe and simple guide on how to clean old coins at home.

1. Identify the Coin Before Cleaning
   Before you start, check if the coin is valuable or rare. Collectors often prefer coins in their natural state. If you think a coin may have high value, avoid cleaning it and consult a coin expert for advice. Cleaning may remove the original patina that adds to its historical worth.
2. Rinse the Coin With Warm Water
   Hold the coin under warm running water to remove loose dirt and dust. Use your fingers to gently rub the surface. Do not use hot water, as it may cause discoloration on some metals.
3. Use Mild Soap for Basic Cleaning
   Mix a few drops of mild dish soap in a small bowl with warm water. Soak the coin for a few minutes. Then gently rub it with your fingers or a soft cloth. This helps remove grease and surface grime without scratching the coin.
4. Try a Soft Toothbrush for Stubborn Dirt
   If dirt remains, use a soft-bristled toothbrush to clean the coin. Brush lightly and avoid applying pressure. Always brush in one direction to prevent marks.
5. Clean Copper Coins With Vinegar or Lemon Juice (Optional)
   For very dirty copper coins, you can soak them briefly in vinegar or lemon juice. These liquids help remove tarnish but can also strip natural color, so use this trick only for coins with no collectible value. Rinse immediately after soaking.
6. Avoid Harsh Chemicals or Abrasive Tools
   Never use metal polish, baking soda scrubs, or sharp tools. These can scratch the surface and permanently damage fine details. Speciality cleaners should only be used if recommended by an expert.
7. Rinse and Dry the Coins Properly
   After cleaning, rinse the coins thoroughly in clean water to remove any soap or cleaning agents. Pat them dry with a soft towel. Avoid rubbing, as it may leave scratches. Let the coins air-dry completely before storing them.
8. Store Coins in a Safe Place
   Place cleaned coins in protective holders, coin albums, or soft cloth pouches. Keep them in a cool, dry place to prevent future corrosion or discoloration. Avoid plastic bags, as they can trap moisture.

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