50 Heller stamp exhibition Kaschau with hand stamp overprint "Karlovy Vary 1. X. 1938 plus swastika", vertical gutter pair with overprint also on the ornamental field, with cancellation adjusted date stamp Karlovy Vary 1 4. X. 38 9 d on faultless letter piece, issued only 118 gutter pairs, expertized Dr. Dubb and Osper BPP, photo expertize Brunel VP (2024) "the condition is perfect. ", Michel 300.-