100 + 30 Mark Kleinrentnerhilfe, postmarked "DANZIG * 5 g 30. 3. 23 4-5 N", with printing error II "lower crown in the upper left shield on the left side open (Field 43)", expertized by Dr. Oechsner and INFLA round stamp, brief finding by Gunnar Gruber BPP (2023) "genuine and flawless", Michel -,-