2 Mark German Reich with typography overprint \"Gdansk\", blackish blue, from left margin of sheet, plate flaw I \"small horizontal line in the E from second United\" (appraises the 10 Fold at the plain colour), impeccable mint never hinged, expertized Kniep BPP and photo expertize Tworek BPP (2023) : \"genuine and immaculate\", Michel 1.000.- (without the Factor for the plate flaw associated with of the rare colour shade)