The product is a 2004-S United States Mint 50 State Quarters Silver Proof Set, featuring quarters with a silver composition and proof finish. This set includes all 50 states represented in the quarter series, each housed in a box with a Certificate of Authenticity from the U.S. Mint. Each coin has a fineness of 0.9 and was minted in San Francisco. This set is a valuable collector's item showcasing the intricate design and craftsmanship of the United States Mint.