美國
現在展示： 美國 - 航空信件專用郵票 (1934 - 1936) - 2 郵票.
1934
Great Seal of the United States
30. August 窗口管理器: 空缺 篩孔: 11
![[Great Seal of the United States, 類型 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. February 窗口管理器: 空缺 篩孔: 11
![[Great Seal of the United States - New Edition, 類型 B]](https://www.stampworld.com/media/catalogue/United-States/Airmail-delivery-stamps/B-s.jpg)
