1878 Twenty-Cent Piece. Proof-62 (NGC).；Smartly impressed with appreciable reflectivity in the fields, both sides are dusted in pale golden-gray patina. Direct lighting reveals a modest cameo finish that goes unmentioned on the NGC insert. From a Proof-only mintage of 600 pieces for the final issue in the brief twenty-cent series of 1875 to 1878.
