2 Mark on 35 Pfennig Germania with network underprint, vivid lilac-grey, top pointing downwards, with printing error I "break through "zi" from Danzig", timely postmarked "DANZIG * 1 n .... 11. 22. 3-4 N", flawless condition, unsigned, certificate Gunnar Gruber BPP (2021) "genuine and flawless", Michel 1. 500.-