50 Heller delivery stamp, bright magenta, pair inverted, with hand-stamped overprints "Wir sind frei! + Swastika", with special postmark "Reichenburg Deutsche Reichspost 8. OKT. 1938 Heil Hitler!" on a flawless blank envelope, edition of the delivery stamp only 100 pieces - as an inverted pair very rare, photo certificate Brunel VP (2020) "The condition is impeccable. Inverted pairs are very rare.", Michel 2. 500.-