Some historic facts related to this nice cover from Poland: during the years up to 1939, in the free state of Danzig (actually Gdansk), Polish citizens had their own Polish Post Ofiice. On September 1, 1939, the building of Polish Post was attacked by German soldiers. After the defeat battle the Polish postmen were executed. The stamps on cover commemorate the defense of Polish Post in Gdansk in 1939: the horizontal stamp commemorates the mambers of Polish Post in Gdansk that were executed.
