1877 Twenty-Cent Piece. Proof-65+ (NGC).;An impressive condition rarity from this key date twenty-cent issue. The obverse is predominantly toned in blended copper-rose and cobalt blue patina, although the colors assume a mottled distribution near the upper left and lower right borders that allows areas of silvery brilliance to shine forth. The reverse has a markedly different appearance with iridescent blue and golden-orange peripheral highlights to an otherwise untoned surface. Fully struck and expertly preserved, even the finest type or date set would be enhanced by the inclusion of this captivating Gem.<p>Introduced in 1875, by the following year the twenty-cent piece had already proved a failure in commercial channels. As such, the Mint suspended circulation production in 1876, although Proof coinage for collectors continued for two more years through 1878. With only 510 coins struck, the Proof-only 1877 is the rarest date in this brief series. Far finer than the typical survivor in the Proof-60 to Proof-64 grade range, this premium quality specimen is a real treat for the advanced collector.