50 Heller exhibition Pilsen with hand stamp overprint "we are free! plus swastika" in the horizontal gutter pair, in conjunction with German Reich 1 pfennigs Hindenburg-medallion on faultless letter piece with full postmarks "Liberec 1 German Reichspost 8. X. 1938 Heil Hitler! ", abridged certificate with photo Brunel VP (2021) "perfect", Michel 650.-