|selection of Eastern Silesia imperf||xxx|
|Stamps of Czechoslovakia overprinted in black, blue, violet or red, imperf|
|1 heller dark brown||1||1|
|other values 3h to 1000h||2-21||2-22|
|perf 11½, 13½|
|values 1h to 200h||22-30||23-38|
|1920 Sc41 SG57|
Gibbons  notes that the area was disputed by Czechoslovakia and Poland.
Although a plebiscite was intended, it was never held due to civil disorder and the Counci of Ambassadors divided the area between the two parties in July 1920.
There is also a series overprints on the stamps of Poland (Sc41-50, SG57-66).
The "S.O." stands for Silésie Orientale.