These are among the most popular questions we receive here at The Fun Times Guide to Coins...
Question #1:
How Do I Clean My Coins?
Don't! Cleaning your coins will actually reduce their value. Why? Because coin collectors and coin investors prefer coins with their original, natural toning and color.
Cleaning your coins will wash away their natural toning and even strip away some of its metal. As a result, most coin cleanings actually result in damage.
Coins with loose dirt and debris can be safely removed with gently running, clean water. Afterward, you can softly pat the coins dry with a soft towel.
Any coins which have heavy amounts of grime, grease, or residue should be cleaned only by a professional. Refer to a coin dealer for information on where to have your coin cleaned by a local professional or recommended mail-order service.