1978 -1979 Buildings WM: 13

1980 Radio Amateurs 1980 The 50th Anniversary of the Technical Military Academy 1980 Christmas – The 150th Anniversary of the Appearance of the Holy Virgin to Saint Catherine Laboure, The 350th Anniversary of the Appearance of Holy Virgin at Lujan 1980 The 150th Anniversary of the Death of Simon Bolivar 1980 Rosette 1981 Football Gold Cup, Montevideo 1981 General Jose de San Martin 1981 Rosette 1981 Paintings 1981 Buildings 1981 International Congress on Medicine and Sciences applied to Sport 1981 The 20th Anniversary of the Antarctic Treaty 1981 The 100th Anniversary of the Military Club 1981 “Espamer ’81” International Stamp Exhibition, Buenos Aires 1981 Rosette 1981 Celebrities’ Anniversaries 1981 The 100 Anniversary of the Naval Observatory 1981 The 50th Anniversary of the Bahia Blanca Philatelic and Numismatic Society – Stamp of 1979 Overprinted 1981 Air Force Day 1981 The 500th Anniversary of the Death of Saint Cayetano, Founder of Teatino Order 1981 The 22nd Latin American Steel-makers Congress, Buenos Aires 1981 International Year of Disabled People 1981 Campaign against Indiscriminate Whaling 1981 International Stamp Exhibition “ESPAMER ’81” – Buenos Aires, Argentina 1981 International Stamp Exhibition “ESPAMER ’81” – Buenos Aires, Argentina 1981 Argentine Army – The 175th Anniversary of the Infantry Regiment Number 1 “Patricios”