Guinea Bissau
Now showing: Guinea Bissau - Postage stamps (1974 - 2018) - 1 stamps.
1976
Airmail - The 100th Anniversary of the Universal Postal Union
12. September WM: None Perforation: 11
![[Airmail - The 100th Anniversary of the Universal Postal Union, type ]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Guinea-Bissau/Postage-stamps/0036-b.jpg)