1877 Trade Dollar. Proof-62 (PCGS).;This fully impressed, handsomely toned specimen is veiled in warm pinkish-gray patina. The fields are a bit "cloudy" to explain the assigned grade, although appreciable reflectivity remains to shine forth as the surfaces dip into a light. From a reported mintage of 510 Proofs, a figure that some scholars believe is an error that should be 710 pieces.;