1959 Airmail – The Death of Jeorge Gaitan, 1898-1948 – Unspent Stamps Surcharged 1959 Airmail – Previous Issue Surcharged 1959 Local Motives WM: 5 1959 Airmail – Unification of Airmail Rates – Overprinted “UNIFICADO” 1959 Airmail – Unification of Airmail Rates – Overprinted “UNIFICADO” 1959 The 100th Anniversary of Colombian Stamps – Inscribed “1859 1959” 1959 Airmail – The 100th Anniversary of Colombian Stamps – Inscribed “1859 1959” 1959 Airmail – The 100th Anniversary of Colombian Stamps – Inscribed “1859 1959” – Domestic Airmail WM: 5 1959 The 40th Anniversary of Colombian “AVIANCA” Airmail Services 1959 Airmail – The 40th Anniversary of Colombian “AVIANCA” Airmail Services 1959 Airmail – The 40th Anniversary of Colombian “AVIANCA” Airmail Services 1960 The 100th Anniversary of the Death of Alexander von Humboldt, 1769-1859 1960 Airmail – The 100th Anniversary of the Death of Alexander von Humboldt, 1769-1859

1954 Airmail – Stamps for Domestic Airmail 1954 The 300th Anniversary of Senior College of Our Lady of the Rosary, Bogota 1954 Airmail – The 300th Anniversary of Senior College of Our Lady of the Rosary, Bogota 1954 The 300th Anniversary of Senior College of Our Lady of the Rosary, Bogota 1954 Airmail – The 300th Anniversary of Senior College of Our Lady of the Rosary, Bogota 1954 Inauguration of Paz del Rio Steel Plant 1954 Airmail – Inauguration of Paz del Rio Steel Plant 1954 Airmail – Previous Issue Overprinted “A” 1955 The 100th Anniversary of the Birth of Jose Marti, 1853-1895 1955 Airmail – The 100th Anniversary of the Birth of Jose Marti, 1853-1895 1955 Colombian Forces in Korea 1955 Airmail – Colombian Forces in Korea 1955 Greater Colombia Merchant Marine Commemoration 1955 Airmail – Greater Colombia Merchant Marine Commemoration 1955 Greater Colombia Merchant Marine Commemoration 1955 Airmail – Greater Colombia Merchant Marine Commemoration 1955 Airmail – Stamps for Domestic Airmail and 100th Anniversary of the Birth of Marco Fidel Suarez, 1855-1927 1955 Local Motives 1955 Airmail – Local Motives 1955 The 50th Anniversary of Rotary International 1955 Airmail – The 50th Anniversary of Rotary International 1955 The 7th Postal Union Congress of the Americas and Spain 1955 Airmail – The 7th Postal Union Congress of the Americas and Spain 1955 Express Domestic Airmail – The 7th Postal Union Congress of the Americas and Spain