Memel definitives with black "MEMEL 50 Pfennig" overprint on 50 Centimes, Prussian blue, cancelled "(WISC)HWILL (MEMELGEBIET) 27.5.22 8-9V.", well preserved, unsigned, opinion Tobias Huylmans BPP (2018) "some short or missing perforation tips at right and left, otherwise faultless", Mi. 450,--