Allenstein was a region of East Prussia (German territory) that was disputed at the end of the First World War. A plebiscite was held to decide if it should be in Germany or Poland. German stamps were issued during the period of the plebiscite in 1920 with an overprint of PLEBISCITE OLSZTYN ALLENSTEIN. The vote was in favour of Germany. After the Second World War the region was incorporated within Poland and is now called Olsztyn.
See all Allenstein stamps in the StampWorld free online catalogue.
Scanned album pages from the worldwide stamp collection of Antonius Ra.