3 Guilder on 1 Million Mark with printing error II: "u in Guilder at the bottom is open", cancelled with date stamp "DANZIG * 1 k -6. 6. 24 4-5 N" and two security stamps (postcard cancellation) of the Danzig 1 post office, flawless condition, unsigned, photo certificate Gunnar Gruber BPP (2018) "flawless", Michel 700,-