Definition: A reverse proof coin is a coin that is struck in the same manner as a normal proof coin, except that the fields are frosty and the raised devices are mirror-like. The term reverse proof does not mean that only the reverse side of the coin is struck in proof finish. The entire coin is in proof finish, with the "reverse" meaning stemming from the fact that the fields are frosty (rather than the devices.)
See also: Proof Coin
See also: Proof Coin
Examples:
The reverse proof Gold and Silver Eagles are the most sought after coins of the 2006 minting year.