United States Mint Sets
Annual Coin Sets are fundamental in coin collecting. The United States Mint packages uncirculated, proof, and silver proof coin sets each year for sale to collectors. Mint sets contain uncirculated specimens of each year's coins for every denomination issued from each U.S. Mint. Unlike Proof sets, the coins contained in uncirculated sets are not minted with any special quality considerations. They are the normal coins intended for circulation. Coins that are struck as Proof only issue are not included. Beginning in 2005 the US Mint started minting Uncirculated Mint Sets with a satin finish which helps collectors differentiate between Uncirculated Coins and U.S. Mint Uncirculated Coin Sets. Special Mint Sets, referred to as SMS were issued from 1965 to 1967. The coins are better than average strike on a higher-tonnage coin presses than circulation quality coins.