Brazil

1981 Agricultural Products

1981 The 100th Anniversary of the Death of Felix Emile, Baron of Tauny, 1795-1881

1981 The 50th Anniversary of the Integrated Post Office and Telegraph Department

1981 The 4th Anniversary of the Pan-American Jamboree

1981 Agricultural Development

1980 The 250th Anniversary of the Birth of Antonio Lisboa, 1730-1814

1980 Beatification of Father Jose de Anchieta

1980 Agricultural Products

1980 Thanksgiving Day

1980 Postal Chess