1868 Liberty Seated Half Dollar. WB-101. Unc Details--Cleaned (PCGS). The mintage for the Philadelphia Mint 1868 half dollar was just 417,600 pieces, as silver coins had still not returned to circulation in the East and Midwest after their disappearance early in the Civil War. Most examples were hoarded and/or exported, although some did eventually see domestic circulation after the resumption of silver specie payments in April 1876. From the E. Horatio Morgan Collection.