250 000 Mark airmail 1923, corner margin top left, in perfect condition date-appropriate cancelled \"Gdansk * 1 h 24.10.23\", photo expertize copy Gruber BPP (for the complete set) \"perfect\", Michel for normal stamp 450.- - as upper margin copy unlisted, in genuine used is these issue very rare, as upper margin copies places the single stamps small rarities and valuables the Gdansk philately dar!