I HAVE BEEN A COIN AND STAMP DEALER FOR OVER 38 YEARS

THE WORST THING YOU CAN DO IS CLEAN YOUR COINS. USING ITEMS LIKE

BRASSO, BAKING SODA, STEELWOOL, OR HARSH BRUSHES WILL DESTROY

THE  ORIGINAL SURFACE OF THE COIN AND CHANGE THE COLOR.

NO DEALER WILL WANT TO BUY THESE COINS AT A REAL MARKET PRICE.

SOMETIMES A MILD LIQUID DISH DETERGENT CAN LOOSEN GREASE ,THEN RINSE

WITH COLD WATER AND PAT DRY, DO NOT RUB WITH A TOWEL. OTHERWISE

DO NOT CLEAN THEM.  THANKS  NED FISHKIN , CPSSPORTS