Instructions
Wash your hands before touching the coin. The website Silver Monthly notes, "Your hands are a breeding ground for bacteria and naturally contain oils that can damage any rare coins you might handle." If bacteria gets on your coin, it can tarnish the coin and cause corrosion spots.
Avoid touching the front and back of the coin. Repeatedly rubbing or grabbing the front and back of an American Silver Eagle will wear down the design on the coin and will lead to tarnish. When you touch your coin, hold it by the edge.
Store your coins in a dry place away from household cleaning products. Moisture in the air can cause damage to the exterior of your American Silver Eagle and lead to tarnishing. The website Preserving My Heritage also notes that "some paints, textiles and other household materials also emit some sulphur-containing organic compounds and these also cause copper and silver to tarnish." It's best to store your silver coins in a box or safe in a cool, dry place.