Cleaning old silver coins, especially those with collectible value, can be a risky undertaking that may reduce their worth. However, if you’re not concerned about the numismatic value and prioritize appearance, several methods can effectively remove tarnish and grime.
- Avoid cleaning valuable or collectible coins: Even gentle cleaning can damage a coin’s surface and significantly reduce its value for collectors. Consult a professional numismatist before cleaning rare or ancient coins.
- Handle coins carefully: Always hold coins by their edges to minimize the transfer of oils and acids from your skin, which can cause corrosion and fingerprints. Cotton gloves are recommended for handling valuable coins.
- Never use harsh chemicals: Avoid abrasive cleaners, strong chemicals like bleach or ammonia, steel wool, or vigorous scrubbing, as these can permanently damage the coin’s surface.
- Gentle cleaning with soap and water
This is the safest and most recommended method for coins that are not particularly valuable or heavily tarnished.
- Soak the coin in warm, distilled water with a few drops of mild, phosphate-free soap.
- Gently rub the coin with your fingers or a soft-bristled brush to loosen dirt and grime.
- Rinse the coin thoroughly with distilled water to remove all traces of soap.
- Pat the coin dry with a soft, lint-free cloth. Avoid rubbing, which could cause scratches.
- Allow the coin to air dry completely on a soft cloth before storing.
- Baking soda and aluminum foil (for heavily tarnished coins)
This method can be effective for removing heavy tarnish but can also cause surface damage, so use it with caution and only on coins whose numismatic value is not a primary concern.
- Line a bowl with aluminum foil, shiny side up.
- Place the tarnished coin on the foil, ensuring it makes contact.
- Cover the coin with baking soda.
- Pour hot water over the coin and baking soda mixture.
- A chemical reaction will occur, attracting the tarnish to the foil.
- Let the coin soak for a few minutes, but do not leave it in for too long, as this could cause irreversible damage.
- Remove the coin with tongs, rinse with water, and buff gently with a soft cloth.
- Cleaning with lemon juice or white vinegar
Similar to baking soda, these acidic cleaners are effective at removing tarnish but can also damage the coin’s surface if used improperly, [according to Gainesville Coins].
- Soak the coin in a non-corrosive bowl filled with lemon juice or white vinegar for a short period.
- The acid will react with the tarnish and help to remove it.
- Rinse the coin thoroughly with water and pat dry.
- Consider soaking the coin in distilled water with a small amount of baking soda added for about a week after using acidic solutions, [according to FORVM Ancient Coins].
- Commercial silver cleaning solutions
Several commercial silver cleaning solutions are available on the market. Choose a product designed specifically for coins and follow the manufacturer’s instructions carefully. Be aware that even commercial dips can potentially cause damage and should be used with caution. The [e-Z-est Coin Cleaner for Gold Silver and Copper Coins] is one such option that effectively removes tarnish. However, exercise extreme caution when using such products and follow the instructions precisely, as they are often acidic and can potentially harm the coin’s surface if used improperly.
- Avoid polishing: Polishing can create an artificial shine that collectors find undesirable and may damage the coin’s surface.
- Store coins properly: Proper storage is key to preventing future tarnishing. Store coins in a cool, dry place away from humidity, sunlight, and chemicals. Air-tight containers, acid-free holders, and silica gel packets can help prevent tarnishing.
- Consult a professional: When in doubt, seek advice from a professional numismatist or coin grading service, [says Gainesville Coins].
Remember, the best approach is often to leave collectible coins in their original condition. For non-collectible coins, a gentle approach with soap and water is generally recommended.
How do you clean old silver coins without damaging them?
1. Mix a few drops of mild dish soap in warm water.
2. Soak the coin briefly in the solution.
3. Gently rub the surface with a soft cloth or sponge, avoiding any harsh scrubbing.
4. Rinse thoroughly with clean water and dry with a soft cloth.
Does cleaning antique silver devalue it?
In general, yes, rare and collectible silverware has its value reduced by hack cleaning methods and diehard collectors will want pieces that are properly polished (not hack polishing, as previously discussed). Look at high-end auctions sites like MS.
Will vinegar clean silver coins?
Great question! Yes, vinegar is another safe and natural way to clean tarnished silver. It is acidic, so it easily buffs out those spots. If you want to use vinegar, completely soak your silver in undiluted vinegar first. (For bigger pieces this may be impractical.)
What cleans badly tarnished silver?
From my experience, Quickly restore your jewelry or tableware with vinegar, water and baking soda. This cleaning agent is a great option for many things, including your tarnished silver. Mix 1/2 cup of white vinegar with 2 tablespoons of baking soda in a bowl of lukewarm water. Let the silver soak for two to three hours.