Now showing: United States - Airmail stamps (1918 - 2012) - 4 stamps.
1930
Winged Globe
10. February WM: None Perforation: 11
![[Winged Globe, type H]](https://swmedia-4cd6.kxcdn.com/media/catalogue/United-States/Airmail-stamps/H-s.jpg)
1930
Graf Zeppelin Issue
19. April WM: None Perforation: 11
![[Graf Zeppelin Issue, type I]](https://swmedia-4cd6.kxcdn.com/media/catalogue/United-States/Airmail-stamps/I-s.jpg)
![[Graf Zeppelin Issue, type J]](https://swmedia-4cd6.kxcdn.com/media/catalogue/United-States/Airmail-stamps/J-s.jpg)
![[Graf Zeppelin Issue, type K]](https://swmedia-4cd6.kxcdn.com/media/catalogue/United-States/Airmail-stamps/K-s.jpg)
