Montre maintenant: États-Unis - Timbres poste aérienne (1990 - 1999) - 9 Timbres-poste.
12. octobre WM: Aucun Perforation: 11
![[AMERICA - Tropical Coast, type CU]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/CU-s.jpg)
27. avril WM: Aucun Perforation: 11
![[Aviation Pioneers - Harriet Quimby & Blériot XI Monoplane, type CV]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/CV-s.jpg)
![[Aviation Pioneers - Harriet Quimby & Blériot XI Monoplane, type CV1]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/CV1-s.jpg)
17. mai WM: Aucun Perforation: 11
![[William T.Piper, type CW]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/CW-s.jpg)
21. juin WM: Aucun Perforation: 11
![[Antarctic Treaty, type CX]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/CX-s.jpg)
12. octobre WM: Aucun Perforation: 11
![[America PUAS - First Americans Crossed over from Asia, type CY]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/CY-s.jpg)
13. juillet WM: Aucun Perforation: 11¼
![[William T. Piper - Hair Touches Top Edge of Design, type CW1]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/CW1-s.jpg)
WM: Aucun Perforation: Rouletted 11
![[Landscape - Self-Adhesive, type XAA]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/XAA-s.jpg)
30. juillet WM: Aucun Perforation: Rouletted 11
![[Landscape - Self-Adhesive, type XAB]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/XAB-s.jpg)