Ora in esposizione: Guatemala - Tassa francobolli posta aerea (1919 - 1945) - 2 francobolli.
1940
Central Post Office Stamp of 1927 Overprinted "1940" in Dark Purple or Dark Brown
Gennaio WM: Nessuno Dentellatura: 14
![[Central Post Office Stamp of 1927 Overprinted "1940" in Dark Purple or Dark Brown, Scrivi B9]](https://www.stampworld.com/media/catalogue/Guatemala/Air-tax-stamps/B9-s.jpg)
1940
The 50th Anniversary of Pan American Union - Central Post Office Stamp of 1927 Overprinted
14. Marzo WM: Nessuno Dentellatura: 14
![[The 50th Anniversary of Pan American Union - Central Post Office Stamp of 1927 Overprinted, Scrivi B10]](https://www.stampworld.com/media/catalogue/Guatemala/Air-tax-stamps/B10-s.jpg)
