Airmail - The 100th Anniversary of I.T.U. 1965
Now showing: Colombia - Postage stamps - 1965 - Airmail - The 100th Anniversary of I.T.U. - 1 stamps.
1965
Airmail - The 100th Anniversary of I.T.U.
25. October WM: None Design: T.N.Molina Engraving: Staadtsdruckerei Wien Perforation: 12
![[Airmail - The 100th Anniversary of I.T.U., type ADU]](https://www.stampworld.com/media/catalogue/Colombia/Postage-stamps/ADU-s.jpg)
