Souvenir sheet issue "for Berlin monetary reform vitims", single franking on at 5 pfennigs under-franked airmail register distance letter from "BERLIN Green forest 1 g 19.12.49" to Munich with arrival postmark on the back from 21.12.49, souvenir sheet slightly spotted, cover with defects, unsigned, photo expertize Hans Dieter Schlegel BPP (2025)