Commercial jewelry and metal polishes are usually too harsh. Never, for example use silver tarnish remover to clean silver coins as it will adversely affect a coin's natural toning. Always rinse the coins with distilled water after cleaning. Tap water should not be used as it contains minerals which may create spots on the surface of a coin. Do not attempt this process yourself.
Some collectors like to use baking soda as a cleaning method to make a worn coin look shiny and new.
This is not recommended as it will generally ruin the numismatic value of a coin. Never clean touch or rub the surface of any Proof coin. If there is dust on the coin simply blow the dust away gently. Finally it should be noted that specially made commercial coin cleaners are available at most coin supply shops but these tend to be rather expensive. Previous Articles .