지금 보여주기: 미국 - 우표 (1920 - 1929) - 6 우표.
26. 5월 WM: 없음 절취선: 11
![[The 150th Anniversary of Washington's Encampment at Valley Forge, 유형 GG]](https://www.stampworld.com/media/catalogue/United-States/Postage-stamps/GG-s.jpg)
13. 8월 WM: 없음 절취선: 11 x 10½
![[The 150th Anniversary of the Discovery of Hawaii by Captain Cook, 유형 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, 유형 GJ]](https://www.stampworld.com/media/catalogue/United-States/Postage-stamps/GJ-s.jpg)
20. 10월 WM: 없음 절취선: 11 x 10½
![[The 150th Anniversary of the Battle of Monmouth, 유형 GH]](https://www.stampworld.com/media/catalogue/United-States/Postage-stamps/GH-s.jpg)
12. 12월 WM: 없음 절취선: 11
![[Aeronautics Conference Issue, 유형 GK]](https://www.stampworld.com/media/catalogue/United-States/Postage-stamps/GK-s.jpg)
![[Aeronautics Conference Issue, 유형 GL]](https://www.stampworld.com/media/catalogue/United-States/Postage-stamps/GL-s.jpg)
