20th Anniversary Silver Eagle Set

2006-W Reverse Proof Silver EagleTo mark the 20th Anniversary of the American Silver Eagle Coin Program, the United States Mint issued a special set.  These sets notably included the first coins struck by the US Mint in reverse proof.  Reverse proof coins have frosted fields and mirrored raised elements.  This is the reverse of the finish used on cameo proof coins.

The 20th Anniversary Silver Eagle Sets contained three coins:

The sets proved to be extremely popular with collectors.  The production limit of 250,000 sold out at the Mint within a few days.