Sýni: Breska Gvæjana - Venjuleg frímerki (1850 - 1966) - 4 frímerki.
1965
The 100th Anniversary of I.T.U.
17. maí WM: 5 Götun: 11 x 11½
![[The 100th Anniversary of I.T.U., tegund CM]](https://www.stampworld.com/media/catalogue/British-Guiana/Postage-stamps/CM-s.jpg)
![[The 100th Anniversary of I.T.U., tegund CM1]](https://www.stampworld.com/media/catalogue/British-Guiana/Postage-stamps/CM1-s.jpg)
1965
The 20th Anniversary of the United Nations
25. október WM: 5 Götun: 14½
![[The 20th Anniversary of the United Nations, tegund CN]](https://www.stampworld.com/media/catalogue/British-Guiana/Postage-stamps/CN-s.jpg)
![[The 20th Anniversary of the United Nations, tegund CN1]](https://www.stampworld.com/media/catalogue/British-Guiana/Postage-stamps/CN1-s.jpg)
