1910-D Barber Quarter. MS-66 (PCGS). CAC. This glorious premium Gem exhibits powder blue and pale apricot peripheral highlights to dominant antique silver patina. Sharply rendered over virtually all design elements, both sides also offer full mint frost that is as smooth and inviting as the day the coin emerged from the dies. As a handful of astute specialists know, the 1910-D is scarce to rare in all Mint State grades. Q. David Bowers (2019) states that Gems in MS-65 are "surprisingly rare....for a late-date quarter with a mintage well over a million." At the MS-66 level the present example is very rare from a condition standpoint and, with only three certified finer at PCGS, this may be the finest in quality and eye appeal realistically obtainable as far as most collectors are concerned.