New PCGS Service

There's a difference between getting the dreaded "Cleaned" and what they are doing. When a coin get's the "Cleaned" designation, there is usually some type of change in the metal. Whether that be a chemical change in color, or a chemical stripping off a thin layer of the coin's metal. Also, some people use abrasives (AHHHHHHHHHH) which leave microscopic scratches all over the coin. Restoring a coin (they probably just use acetone... maybe some other chemicals that don't react with the metal), does not change the metal of the coin in any way, that is the difference.

Edit: Oops, didn't realize this thread was dead. My bad!