Baking soda is used for many things, including cleaning costume jewelry. Due to its mild abrasiveness, it removes stuck-on particles and will polish most hard substances, including coins. You can clean most coins using baking soda and water alone; however, you should note that cleaning old coins may decrease their value. If you suspect a coin may be valuable, consult with a professional coin dealer before attempting to clean it.
Things You'll Need
- Baking soda
- Toothbrush (soft-bristled)
- Soft cloths
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Lay a clean towel next to your kitchen or bathroom sink.
Pour baking soda in a small bowl. You’ll need about ¼ tsp. per coin.
Put a stopper in your sink drain, if available. If you don’t have a stopper, place a heavy cloth over the drain in case you lose your grip on one of the coins.
Wet a soft-bristled toothbrush under your sink faucet. Dab the bristles in the bowl of baking soda and, holding a coin in your hand, begin gently scrubbing the coin. Use a gentle, light touch when scrubbing. Tarnish should immediately start coming off, especially if the coins are silver.
Rinse the coin beneath warm running water and then dry it with a soft cloth. Place it on the towel next to the sink. Repeat this process with all the coins you choose to clean.