50 H. Postal stamp \"stamp exhibition Kaschau\" in the vertical gutter pair with hand stamp overprint \"we are free! Plus swastika\" - this also on the ornamental field! Neat cancelled with special cancel \"Maffersdorf eighth of October 1938\" on piece, issued only 800 pieces - of it few as gutter pair - and of these again also only a small proportion with likewise overprinted ornamental field! Expertized Dr. Hörr and expertise Brunel VP (2021) : \"the condition is perfect. \", Michel 600.-