1888 Liberty Seated Half Dollar. Proof-66+ (PCGS). CAC.;Here is another Registry Set candidate. The obverse of this gem has multi-colored iridescence while the reverse is similarly beautiful. This coin is a real find for any advanced collector with a sharp eye for quality.;From our (Stacks) sale of the S.S. Forrest, Jr. Collection, September 1972, part of lot 891.