1 Fr. Charity issue "soldiers" with hand stamp overprint in type I, properly franked mixed franking on letter from "Ghyvelde 09.07.40" to Dunkerque with on the back arrival stamp from 10.07.1940, faultless condition, unsigned, expertise Lothar Herbst VP (2018) : "the condition is perfect. The stamps are only in very small number of pieces known, therefore are they very rare. ", Michel 1.000.-