Souvenir sheet issue "PRAGA 1938" with handstamp overprints "we are free! Plus swastika", centric cancellation with special cancel "Liberec 1 8 October 1938", very fine, issued only 300 examples, expertized Dr. Dub, Mahr BPP and expertise Robert Brunel VP (2023) "the condition is perfect. ", Michel 3.000.-