STAMPS BY YEAR
1962
Poland, Northern provinces
Poland, Russian revolution
1963
Poland, Sailing ships definitives
1964
Poland, Sailing ship definitives
Poland, Jagiellonian university
Poland, People's republic
Poland, Poland's struggle
1965
Poland, Warsaw anniversary
1966
Poland, Tourism
Poland, Archaeological research
1969
Poland, Copernicus
1970
Vietnam, Industries
1962
Poland, Northern provinces
Poland, Russian revolution
1963
Poland, Sailing ships definitives
1964
Poland, Sailing ship definitives
Poland, Jagiellonian university
Poland, People's republic
Poland, Poland's struggle
1965
Poland, Warsaw anniversary
1966
Poland, Tourism
Poland, Archaeological research
1969
Poland, Copernicus
1970
Vietnam, Industries