Coin-related Term: Proof Coin

Proof coins are specially prepared coins which are not meant for circulation. The working dies and the coin blanks are polished to a mirror-like surface before the coins are struck.

Proof coins are specially prepared coins which are not meant for circulation. The working dies and the coin blanks are polished to a mirror-like surface before the coins are struck.

Proof is a method of manufacture, not a condition or grade.

Such coins should never be handled, as perspiration from the hand will tarnish them. Proof sets are assembled in presentation cases by mint staff wearing gloves.