1973 Airmail – The 150th Anniversary of Naval Battle of Maracaibo 1973 Airmail – The 50th Anniversary of Republican Bank 1973 Airmail – Previous Issue Overprinted “AEREO” 1973 Airmail – The 50th Anniversary of Ministry of Communications 1973 Airmail – The 400th Anniversary of Toro 1973 Airmail – The 150th Anniversary of Battle of Bombona 1973 The 150th Anniversary of the Death of General Antonio Narino 1973 Child Welfare Campaign 1973 The 50th Anniversary of Republic’s General Comptrollership 1974 Airmail – The 500th Anniversary of the Birth of Nicolas Copernicus, 1473-1543 1974 Airmail – Meeting of Communications Ministers, Andean Group, Cali 1974 The 100th Anniversary of the Birth of Laura Montoya, 1874-1949 1974 Airmail – The 20th Anniversary of Inravision 1974 The 10th National Games, Pereira 1974 Jose Eustacio Rivera 1974 Airmail – The 2nd World Swimming Championships, Cali 1974 Airmail – The 100th Anniversary of Bank of Colombia 1974 Airmail – Definitive Issue 1974 Airmail – The 100th Anniversary of Universal Postal Union 1974 Airmail – The 150th Anniversary of Battles of Junin and Ayacucho 1974 The 100th Anniversary of Colombian Insurance Company 1974 Airmail – The 100th Anniversary of Colombian Insurance Company 1974 Airmail – The 100th Anniversary of U.P.U. – Colombian Birds 1974 The 100th Anniversary of Antioquia Railway 1974 Christmas 1975 Airmail – Colombian Ecology 1975 Airmail – Colombian Art 1975 Pre-Colombian Archaeological Discoveries – Sinu Culture 1975 Airmail – Pre-Colombian Archaeological Discoveries – Sinu Culture 1975 The 100th Anniversary of the birth of Guglielmo Marconi, 1874-1937 1975 The 450th Anniversary of City of Santa Marta 1975 Airmail – The 450th Anniversary of City of Santa Marta 1975 Airmail – International Women’s Year 1975 The 150th Anniversary of Rafael Nunez, 1825-1894 1975 The 300th Anniversary of the City of Medellin 1975 The 100th Anniversary of Reconstruction of Cucuta City 1975 Previous Issue Surcharged 1976 Arms of Cartagena 1976 The 4th Cane Sugar Export and Production Congress, Cali 1976 Airmail – Habitat. U.N. Conference on Human Settlements