1951-D Washington Quarter. MS-68 (PCGS).This otherwise brilliant example exhibits blushes of intense orange-copper iridescence at the right reverse border and, especially, over the right third of the obverse. A wisp or two of color extends toward the left border on the former side. Silky smooth surfaces are frosty and sharply struck throughout with extraordinary quality and eye appeal. For the collector assembling a top flight Washington quarter collection on the PCGS Set Registry, the significance of this offering for the 1951-D can hardly be overstated.PCGS# 5847. NGC ID: 245X.From the Washington Rainbows Collection, the #1 PCGS Registry Set of Silver Washington Quarters, 1932-1964.