美国
现在展示： 美国 - 航空信件专用邮票 (1934 - 1936) - 2 邮票.
1934
Great Seal of the United States
30. 八月 窗口管理器: 空缺 筛孔: 11
![[Great Seal of the United States, 类型 A]](https://www.stampworld.com/media/catalogue/United-States/Airmail-delivery-stamps/A-s.jpg)
1936
Great Seal of the United States - New Edition
10. 二月 窗口管理器: 空缺 筛孔: 11
![[Great Seal of the United States - New Edition, 类型 B]](https://www.stampworld.com/media/catalogue/United-States/Airmail-delivery-stamps/B-s.jpg)
