1926-D Standing Liberty Quarter
The mintmarked issues from 1926 are among the rarest Standing Liberty quarters with Full Head striking detail. Both have fewer than 1% of their mintages sharply struck (per J. H. Cline, 2007), and both are typically offered with very poor definition that usually includes a completely flat head on Liberty's portrait.
The example to the left was sold by Stack's Bowers Galleries in the March 2021 Showcase Auction, where it realized $43,200.