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