The 1986-S US Mint Prestige Proof Coin Set includes a variety of coins with a silver composition, each struck to a high proof finish. This set, minted in San Francisco, includes a $1 silver coin housed in a special box with a Certificate of Authenticity from the U.S. Mint. The coins are uncirculated and come in ungraded condition, making it a valuable addition to any coin collection for collectors of US coins.