Now showing: United States - Postage stamps (1910 - 1919) - 185 stamps.
10. October WM: 1 Perforation: 11
WM: None Perforation: Imperforated
WM: None Perforation: Imperforated
WM: None Perforation: 10 Horizontally
WM: None Perforation: 10 Vertically
19. August WM: None Sheetsize: 100 Perforation: 11
WM: None Perforation: 11
WM: None Perforation: Imperforated
WM: None Perforation: 10 Horizontally
WM: None Perforation: 10 Vertically
10. January WM: None Perforation: 11
3. March WM: None Perforation: 11
WM: None Perforation: 10 Vertically
WM: None Perforation: 12½
June WM: None Perforation: 11 x 10