现在展示: 美国 - 航空邮票 (1990 - 1999) - 9 邮票.
12. 十月 窗口管理器: 空缺 筛孔: 11
![[AMERICA - Tropical Coast, 类型 CU]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/CU-s.jpg)
27. 四月 窗口管理器: 空缺 筛孔: 11
![[Aviation Pioneers - Harriet Quimby & Blériot XI Monoplane, 类型 CV]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/CV-s.jpg)
![[Aviation Pioneers - Harriet Quimby & Blériot XI Monoplane, 类型 CV1]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/CV1-s.jpg)
17. 五月 窗口管理器: 空缺 筛孔: 11
![[William T.Piper, 类型 CW]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/CW-s.jpg)
21. 六月 窗口管理器: 空缺 筛孔: 11
![[Antarctic Treaty, 类型 CX]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/CX-s.jpg)
12. 十月 窗口管理器: 空缺 筛孔: 11
![[America PUAS - First Americans Crossed over from Asia, 类型 CY]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/CY-s.jpg)
13. 七月 窗口管理器: 空缺 筛孔: 11¼
![[William T. Piper - Hair Touches Top Edge of Design, 类型 CW1]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/CW1-s.jpg)
窗口管理器: 空缺 筛孔: Rouletted 11
![[Landscape - Self-Adhesive, 类型 XAA]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/XAA-s.jpg)
30. 七月 窗口管理器: 空缺 筛孔: Rouletted 11
![[Landscape - Self-Adhesive, 类型 XAB]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/XAB-s.jpg)