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 several stamps small rarities and valuables the Gdansk philately dar! (former starting price 300)