3 Guilder on 1 million Mark with overprint flaw II: "u in Guilder at the bottom open", cancelled by bridge date postmark "Gdansk * 1 k -6.6.24 4-5 N" and two security post cancel (package card invalidation) of the post office Gdansk 1, very fine, unsigned, photo expertize Gunnar Gruber BPP (2018) "perfect", Michel 700,-