États-Unis
Montre maintenant: États-Unis - Timbres poste aérienne (1918 - 2012) - 1 Timbres-poste.
1968
The 50th Anniversay of Regularly Scheduled U.S. Airmail Service
15. mai WM: Aucun Perforation: 11
![[The 50th Anniversay of Regularly Scheduled U.S. Airmail Service, type AW]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/AW-s.jpg)
