U.S.A.
Ora in esposizione: U.S.A. - Francobolli Posta Aerea (1918 - 2012) - 2 francobolli.
1935
"China Clipper" over the Pacific
22. Novembre WM: Nessuno Dentellatura: 11
![["China Clipper" over the Pacific, Scrivi M]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/M-s.jpg)
1937
"China Clipper" over the Pacific
15. Febbraio WM: Nessuno Dentellatura: 11
![["China Clipper" over the Pacific, Scrivi M1]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/M1-s.jpg)
![["China Clipper" over the Pacific, Scrivi M2]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/M2-s.jpg)
