The product is a 2008 S Silver Oklahoma State Quarter from the Silver Proof Set minted in San Francisco by the U.S. Mint. This uncirculated coin has a silver composition and a denomination of 25 cents. It features the Oklahoma variety, making it a valuable addition to any collection of State Quarters from 1999-2008. With its proof strike type and certification from the U.S. Mint, this coin is a pristine and collectible piece for numismatists interested in American coinage.