1976 Arms of Ibague 1976 Airmail – The 90th Anniversary of Colombia University 1976 Airmail – The 150th Anniversary of the Birth of Miguel Samper, 1825-1899 1976 Airmail – The 100th Anniversary of Telephone 1976 Colombian Indians 1976 Colombian Fauna and Flora 1976 Airmail – Inauguration of Avianca Jumbo Jet Service 1976 The 50th Anniversary of Colombian Rotary Club 1976 City Crest 1976 The 200th Anniversary of Independence of the United States of America 1976 The 150th Anniversary of Panama Congress 1976 National Police 1977 Airmail – Opening of Philatelic Museum, Medellin 1977 Previous Issues Surcharged 1977 Airmail – Previous Issues Surcharged 1977 Airmail – Definitive Issue 1977 Opening of Postal Museum, Bogota 1977 The 50th Anniversary of Coffee Growers Association of Colombia 1977 Airmail – The 150th Anniversary of the Death of Ludwig van Beethoven, 1770-1827 1977 Nutrition Campaign 1977 City Crest 1977 Birds and Flowers 1977 Airmail – Birds and Flowers 1977 Airmail – The 13th Central American and Caribbean Games, Medellin 1977 Airmail – The 20th Anniversary of Female Suffrage 1977 Airmail – The 200th Anniversary of National Library 1977 Popular Education 1977 The 90th Anniversary of “El Espectador” Magazine by Fidel Cano 1977 City Crest 1977 The 100th Anniversary of the Birth of Dr. Federico Lleras Acosta, 1877-1938 1977 Airmail – The 150th Anniversary of Cauca University 1977 Airmail – The 90th Anniversary of Society of Colombian Engineers 1977 Airmail – Previous Issue Surcharged 1978 Definitive Issue 1978 Airmail – Definitive Issue