STOCK PHOTO - Serial numbers will vary
Once the 2008-W Reverse of 2007 Uncirculated Silver Eagle errors surfaced, the U.S. Mint evaluated their coin inventory and discovered that at least 15 reverse dies from 2007 were employed to strike the reverse design of 2008-W Silver Eagles. Since the Mint strikes approximately 3,000 coins per each set of dies for the Burnished Silver Eagles, there are approximately 45,000 - 2008 Silver Eagles with a Reverse design of 2007 in existence.
The pick up point for distinguishing a 2008-W Uncirculated Silver Eagle with a Reverse of 2007, is on the letter U of United on the Reverse of the coin. The letter U on 2007 coins will lack the serif located on the right lower hand side of the U. In 2008 and going forward, all Uncirculated and Proof Silver Eagles should contain a serif on the bottom right of the letter U of United.