1888 Liberty Nickel. Proof-66 (PCGS). CAC.;A dusting of golden-gray iridescence is a bit bolder and more extensive on the reverse of this fully original Gem Proof nickel. An ultra-quality coin worthy of a position in a superb set.;From our (Stacks) sale of the S.S. Forrest, Jr. Collection, September 1972, part of lot 891.