Colombia
Viser nå: Colombia - Postfrimerker (1859 - 2023) - 2 frimerker.
12. June VM: Ingen Design: Mosdóssy Perforering: 11½ x 12
![[The 6th National Engineers' Congress, 1961 and 75th Anniversary of Colombian Society of Engineers, type ACM]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Colombia/Postage-stamps/ACM-s.jpg)
12. June VM: Ingen Design: Mosdóssy Perforering: 11½ x 12
![[Airmail - The 6th National Engineers' Congress, 1961 and 75th Anniversary of Colombian Society of Engineers, type 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
