Airmail - The 1st Congress for Electronic Data Processing and 100th Anniversary of National University, Bogota 1968
Now showing: Colombia - Postage stamps - 1968 - Airmail - The 1st Congress for Electronic Data Processing and 100th Anniversary of National University, Bogota - 1 stamps.
1968
Airmail - The 1st Congress for Electronic Data Processing and 100th Anniversary of National University, Bogota
29. October WM: None Engraving: Thomas De La Rue de Colombia S.A. Perforation: 13½ x 14
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