Colombia
Visar nu: Colombia - Postfrimärken (1859 - 2023) - 2 frimärken.
12. juni WM: Inga Design: Mosdóssy Perforering: 11½ x 12
![[The 6th National Engineers' Congress, 1961 and 75th Anniversary of Colombian Society of Engineers, Typ ACM]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Colombia/Postage-stamps/ACM-s.jpg)
12. juni WM: Inga Design: Mosdóssy Perforering: 11½ x 12
![[Airmail - The 6th National Engineers' Congress, 1961 and 75th Anniversary of Colombian Society of Engineers, Typ ACM1]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Colombia/Postage-stamps/ACM1-s.jpg)
StampWorld
1962
The 6th National Engineers' Congress, 1961 and 75th Anniversary of Colombian Society of Engineers
1962
Airmail - The 6th National Engineers' Congress, 1961 and 75th Anniversary of Colombian Society of Engineers
