800 thousand on 500 Mark yellowish green in mixed franking on international letter from "FREIBURG (BREISGAU) 31.10.23" in Holland, through a fallen off stamp no longer properly franked, the in particular on cover very scarce Michel number 307 in fresh colours, excellent perforated choise copy condition, the cover with not through the stamps going file folds, photo expertize Dieter Weinbuch BPP " in all parts genuine. (no. 307) in perfect quality"