Scott 2013 mint sheet 20c (50) - Dr. Mary Walker, 1982 Commemorative Stamps, representative stamp imaged.
Scott 2013 mint sheet 20c (50) - Dr. Mary Walker, 1982 Commemorative Stamps, representative stamp imaged.
Scott 2013 mint sheet 20c (50) - Dr. Mary Walker, 1982 Commemorative Stamps, representative stamp imaged.