1879 Trade Dollar. Proof-64+ (PCGS). CAC.;Vividly toned surfaces feature brick red, charcoal-blue, deep rose and olive-gold. Portions of the central reverse retain silvery brilliance. The strike is sharp and there is a lively reflective finish readily evident under a light. The popular 1879 is a Proof-only trade dollar date, with a mintage of 1,541 pieces.;