Not issued: 3 Pfg Hindenburg with black overprint "Pleskau 60 Kop", corner margin copy top left (field 1) cylinder upper margin), in perfect condition mint never hinged, due to of an intervening Forbid was these stamp no longer issued, there are only little copies recorded - being a corner margin copy a major rarity, photo expertize Zirath BPP (2016) : "the condition of the stamp is perfect. ", Michel 3. 000. (free of premium for the corner margin)