Things You'll Need
Instructions
Wash hand with soap to remove oils and dirt from your fingers. Then place the penny on a towel.
Make a bowl of soapy water using a small amount of mild dishwashing detergent. The best containers are plastic, as glass and metals may damage the surface of the coin.
Prepare a rinse bowl using another plastic container. Fill the container with distilled water. If you don't have distilled water, warm tap water will do. Distilled water will help the coin dry free of spots because the water is free of minerals and other impurities.
Place the penny in the soapy water and gently rub on both sides of the coin. Try to work outward, pushing any dirt or grit to the edge of the coin. If you have more than one coin, only wash one at a time.
Allow the coin to dry completely and store in a plastic container. When handling, try to only pick up on the edges.