60 Kop. on 1 pfennigs Hindenburg, overprint black gray violet as corner margin piece top right in the rotary printing, cancelled by Cyrillic cancel "BORI . 41", very fine, signed E wild boar and photo expertize Walter Zirath BPP (2025) "the edition of this stamps amounts to only 200 piece, used especially as corner margin piece are these stamps extremely rare. ", Michel 6.000.- - an exception copy of the rare stamp!