50 Heller "Pilsen" with hand-stamped overprint "Wir sind frei! + Swastika", horizontal se-tenant pair with overprinted ornamental field, used "Maffersdorf 8. October 1938" on a piece of mail, flawless, edition only 800 pieces, very few as a se-tenant pair, and of these, only a small part with overprinted ornamental field, expertised Mahr BPP, Michel 600.-