Eastern Silesia
1920–1920
Plebiscite issues for the disputed Teschen region, made by overprinting Czechoslovak Hradčany and Polish stamps with SO 1920 for Silésie Orientale.
1920–1920
Plebiscite issues for the disputed Teschen region, made by overprinting Czechoslovak Hradčany and Polish stamps with SO 1920 for Silésie Orientale.