||1910 50C PR67 NGC. Ex: "Col." E.H.R. Green. This spectacular Superb Gem exhibits razor-sharp definition on all design elements and the fields are brightly reflective throughout. Vivid spots of sea-green, amber and violet toning visit the well-preserved surfaces. From a small proof mintage of 551 pieces. Census: 17 in 67, 5 finer (9/13). Ex: "Colonel" E.H.R. Green; Green Estate; Partnership of Eric P. Newman / B.G. Johnson d.b.a. St. Louis Stamp & Coin Co.; Eric P. Newman @ $7.50; Eric P. Newman Numismatic Education Society.
Realized $8,812.50 . Description courtesy of Heritage Auctions, ha.com.