The 1981 S Type 2 United States Proof Set includes all 6 coins with clear S mintmarks, minted in San Francisco by the U.S. Mint. These uncirculated coins are composed of copper and struck in proof condition. The set includes coins ranging in denomination from 1 cent to $1, featuring the iconic S mintmark. With a PCGS number of 904795 and a Grade of Ungraded, this set is a valuable addition to any coin collector's portfolio.