The 500th Anniversary of the Birth of Nicholas Copernicus, 1473-1543 1973
Prezentat acum: Mongolia - Timbre poştale - 1973 - The 500th Anniversary of the Birth of Nicholas Copernicus, 1473-1543 - 2 timbre.
Prezentat acum: Mongolia - Timbre poştale - 1973 - The 500th Anniversary of the Birth of Nicholas Copernicus, 1473-1543 - 2 timbre.