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 letter 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.-