1 1 / 4 Mark on 3 Pfennig with grill watermark, lively lilac-gray, top towards bottom, with printing error IV "M" in the value designation and "n" in "Danzig" vertically broken, "zig" lower, field 36, partial issue", mint never hinged with original gum, flawless condition, photo certificate Gunnar Gruber BPP (2022) "genuine and flawless", Michel 350.-