3 Guilder postage due stamp, vertical strip of three, unperforated proof with different fonts, in perfect condition mint never hinged, unsigned, photo expertize Gruber BPP (2010) : \"on the upper margin is a small rest of hinge. The Persuaders! Oblique creases are manufactured. The stamps are genuine and in perfect quality. \", Michel 3.000.- - as unit probably the only one exists!