1868 Nickel Three-Cent Piece. Proof-64 Cameo (PCGS). CAC.;This choice Proof three-cent piece is fully struck, boldly cameoed in finish, and untoned apart from a blush of pale silver over the lower left obverse.;From our (Stacks) sale of the John Work Garrett Collection for The Johns Hopkins University, March 1976, part of lot 302.