现在展示： 美国 - （通用）邮票 (1920 - 1929) - 6 邮票.
26. 五月 窗口管理器: 空缺 筛孔: 11
![[The 150th Anniversary of Washington's Encampment at Valley Forge, 类型 GG]](https://www.stampworld.com/media/catalogue/United-States/Postage-stamps/GG-s.jpg)
13. 八月 窗口管理器: 空缺 筛孔: 11 x 10½
![[The 150th Anniversary of the Discovery of Hawaii by Captain Cook, 类型 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, 类型 GJ]](https://www.stampworld.com/media/catalogue/United-States/Postage-stamps/GJ-s.jpg)
20. 十月 窗口管理器: 空缺 筛孔: 11 x 10½
![[The 150th Anniversary of the Battle of Monmouth, 类型 GH]](https://www.stampworld.com/media/catalogue/United-States/Postage-stamps/GH-s.jpg)
12. 十二月 窗口管理器: 空缺 筛孔: 11
![[Aeronautics Conference Issue, 类型 GK]](https://www.stampworld.com/media/catalogue/United-States/Postage-stamps/GK-s.jpg)
![[Aeronautics Conference Issue, 类型 GL]](https://www.stampworld.com/media/catalogue/United-States/Postage-stamps/GL-s.jpg)
