1856-S Three-Dollar Gold Piece. Medium S. AU Details--Scratch (PCGS).Despite its status as the most frequently encountered San Francisco Mint three-dollar gold piece, the 1856-S is still a scarce issue when viewed in the wider context of U.S. numismatics. Only 34,500 coins were produced, most of which have long since been lost to commercial use. With Mint State survivors rare, About Uncirculated coins are always in demand among advanced gold enthusiasts.From the E. Horatio Morgan Collection.