50 C. Charity issue "unemployed children" with overprint in type I, properly franked multiple franking on cover from "Ghyvelde 11.07.1940" to Dunkirk with arrival postmark on the back from "12.07.1940", faultless condition, signed Roumet, Tust BPP and expertise Lothar Herbst VP (2019: "the condition is perfect. The stamps are only in very small number of pieces known, therefore are they very rare. Multiple franking with charity stamps are very rare. Michel 1.200.-