1875 Liberty Seated Half Dollar. Proof-65 (PCGS). CAC.;This Gem Proof half dollar exhibits mottled cobalt blue, pinkish-apricot and orange-copper iridescence on a base of warmer smoky-silver patina. A razor sharp strike and lovely Gem quality will recommend this beautiful coin to discerning numismatists. From a mintage of 700 Proofs, the typical 1875 Proof half dollar grades no finer than Proof-64.;From our (Stacks) sale of the John Work Garrett Collection for The Johns Hopkins University, March 1976, part of lot 307.