The 6th National Engineers' Congress, 1961 and 75th Anniversary of Colombian Society of Engineers 1962
Now showing: Colombia - Postage stamps - 1962 - The 6th National Engineers' Congress, 1961 and 75th Anniversary of Colombian Society of Engineers - 1 stamps.
1962
The 6th National Engineers' Congress, 1961 and 75th Anniversary of Colombian Society of Engineers
12. June WM: None Design: Mosdóssy Perforation: 11½ x 12
![[The 6th National Engineers' Congress, 1961 and 75th Anniversary of Colombian Society of Engineers, type ACM]](https://www.stampworld.com/media/catalogue/Colombia/Postage-stamps/ACM-s.jpg)
