Zobrazujú sa: Spojené štáty - letecká pošta - známky (1990 - 1999) - 9 známky.
12. október WM: nikto Perforácia: 11
![[AMERICA - Tropical Coast, typ CU]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/CU-s.jpg)
27. apríl WM: nikto Perforácia: 11
![[Aviation Pioneers - Harriet Quimby & Blériot XI Monoplane, typ CV]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/CV-s.jpg)
![[Aviation Pioneers - Harriet Quimby & Blériot XI Monoplane, typ CV1]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/CV1-s.jpg)
17. máj WM: nikto Perforácia: 11
![[William T.Piper, typ CW]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/CW-s.jpg)
21. jún WM: nikto Perforácia: 11
![[Antarctic Treaty, typ CX]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/CX-s.jpg)
12. október WM: nikto Perforácia: 11
![[America PUAS - First Americans Crossed over from Asia, typ CY]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/CY-s.jpg)
13. júl WM: nikto Perforácia: 11¼
![[William T. Piper - Hair Touches Top Edge of Design, typ CW1]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/CW1-s.jpg)
WM: nikto Perforácia: Rouletted 11
![[Landscape - Self-Adhesive, typ XAA]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/XAA-s.jpg)
30. júl WM: nikto Perforácia: Rouletted 11
![[Landscape - Self-Adhesive, typ XAB]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/XAB-s.jpg)