Stamps Year 1991

1940 - International Day of the Written Letter
joaquín iturrioz
Olympic Flag and Rings
Héctor Blaz Rodríguez
three flags
Héctor Blaz Rodríguez
Flag on Mount Rushmore
Héctor Blaz Rodríguez
Soviet Union- BUCOVINA (Between Romania and Ukraine)- 19th Centenary-Mail Transport
Herman Cudris Castañeda
Birds - Spatula clypeata)
Nelida Fernandez Besada
Birds - Somateria mollissima)
Nelida Fernandez Besada
5823 - 75th anniversary of the birth of Paul Kéres, chess player
joaquín iturrioz
1961 - 1992 Olympics in Barcelona, ??Women's Hurdles
joaquín iturrioz
1958 - 1992 Olympics in Barcelona, ??Discus throw
joaquín iturrioz