Here are some European issues that I don't believe were posted earlier:



These are from the Slovak Republic that was set up after Germany grabbed Czechoslovakia and created the Protectorate of Bohemia and Moravia.




These are stamps from the Sudetenland, locally handstamped with "Wir sind frei!" ("We are free!")






Stamps issued by the Polish government-in-exile. There's also one Hungarian stamp from immediately after the Soviet occupation.