1990-12-15: Summer Olympic Games 1992 - Barcelona

1990-12-01: Centenary of Salvation Army

1990-12-01: Centenary of University of Santa Fé

1990-12-01: Christmas 1990

1990-10-27: World Post Day

1990-10-27: National Parks 1990

1990-10-13: America - UPAE (1990)

1990-10-13: Malaspina expedition to the Rio de la Plata

1990-09-15: UPAE Congress

1990-09-15: 50 Years of State Airline "LADE"

1990-08-11: World Basketball Championship

1990-08-11: Basketball World Championship

1990-08-11: World Basketball Championship

1990-07-14: National Aerophilately Exposition "AEROFILADE '90"

1990-07-14: International Literacy Year

1990-06-30: Insects (1990)

1990-06-02: Campaign against Drugs

1990-06-02: 100 years of Business School "Carlos Pellegrini"

1990-05-05: Football World Cup 1990, Italy

1990-05-05: 75 years of State Savings Bank

1990-03-08: Flowers - Austral

1990-03-03: Centenary of the Buenos Aires Port

1990-03-03: Books Fair (1990)