Wordt nu getoond: Verenigde Staten van Amerika - Postzegels (1920 - 1929) - 6 postzegels.
26. mei WM: Geen Perforatie: 11
![[The 150th Anniversary of Washington's Encampment at Valley Forge, type GG]](https://www.stampworld.com/media/catalogue/United-States/Postage-stamps/GG-s.jpg)
13. augustus WM: Geen Perforatie: 11 x 10½
![[The 150th Anniversary of the Discovery of Hawaii by Captain Cook, type GI]](https://www.stampworld.com/media/catalogue/United-States/Postage-stamps/GI-s.jpg)
![[The 150th Anniversary of the Discovery of Hawaii by Captain Cook, type GJ]](https://www.stampworld.com/media/catalogue/United-States/Postage-stamps/GJ-s.jpg)
20. oktober WM: Geen Perforatie: 11 x 10½
![[The 150th Anniversary of the Battle of Monmouth, type GH]](https://www.stampworld.com/media/catalogue/United-States/Postage-stamps/GH-s.jpg)
12. december WM: Geen Perforatie: 11
![[Aeronautics Conference Issue, type GK]](https://www.stampworld.com/media/catalogue/United-States/Postage-stamps/GK-s.jpg)
![[Aeronautics Conference Issue, type GL]](https://www.stampworld.com/media/catalogue/United-States/Postage-stamps/GL-s.jpg)
