This coin is hand signed by John Mercanti himself (the 12th chief engraver and the designer of the reverse of the American Silver Eagle). “S” stands for San Francisco Mint. NGC’s encapsulation guarantees the coins PF70 (perfect 70) condition. What makes this coin so special is that it will be the last year the U.S. Mint is going to use John Mercanti’s design of the rendition of a heraldic eagle on the reverse of the silver eagle. Since 1986 (for 34 years) the U.S. Mint has struck the same design for the beloved American Silver Eagle. This is one of the #1 reasons why John Mercanti signed American silver eagles are so popular among collectors. This will be the last coin with John Mercanti’s reverse design including his signature. This coin is surely be a must for your John Mercanti Signed Silver Eagle Collection.