Things You'll Need
Instructions
Store your coins in plastic pockets made especially for this purpose. They are available individually and in sheets made to place in albums.
Protect your coins from exposure to the elements and try not to scratch or mar them through mishandling.
Know that any cleaning of your coins will potentially affect their value. When in doubt, leave your coins as is and consult a professional coin dealer for advice.
Clean your coins, if you feel you must, with products such as ammonia, vinegar, rubbing alcohol or lemon juice. Allow coins to soak in a container of the liquid until any dirt or encrustation has been dislodged.
Allow coins to air-dry or pat them dry with a soft, clean cloth. Do not rub or polish. This may scratch the surface of the coin and will remove metal from the coin's surface. Any wear will decrease the value of your coin.
Use chemical cleaners like Tarnex as a last resort or if you are less concerned with the potential value of your coin. Always follow the manufacturer's instructions when you use such products.
Clean pennies and other coins not meant for a collection in a solution of vinegar and salt. Place the coins in a small bottle filled with the solution and shake. You may have to let the coins sit for a while to make sure all the dirt is removed.