1921-D Walking Liberty Half Dollar. MS-62 (PCGS).Charming silver gray surfaces reveal iridescent champagne-pink, pale gold and powder blue undertones as the coin rotates under a light. Softly frosted luster is suitably vibrant for the assigned grade, an overall smooth appearance in hand further suggestive of a Choice Mint State rating. The strike is generally sharp with emerging to bold detail on the eagles breast and at Libertys left hand. The 1921-D has the lowest mintage among Denver Mint Walking Liberty half dollars with just 208,000 pieces produced. A key date issue for its type, only the 1919-D, 1919-S and 1921-S are rarer in terms of total number of Mint State coins extant. As nice an many MS-63s for this issue that we have handled over the years, this impressive piece is sure to sell for a strong bid to a discerning collector.