Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - United States - 1991, Harriet Quimby, 50c multicolored, top left corner sheet margin vertical pair imperforate horizontally, plate No.1111 and printer's cross on the left edge, full OG, NH, VF, C.v. $800, Est. $250-$300, Scott #C128a