1 Fr. Charity issue "Auguste Rodin" with hand stamp overprint in type I, properly franked single franking on letter from "Dunkerque 11.07.40" to Ghyvelde with on the back arrival stamp from 12.07.1940, faultless condition, unsigned, expertise Lothar Herbst VP (2018) : "the condition is perfect, with issue typical perforation. The stamps are only in very small number of pieces known, therefore are they very rare. ", Michel 1.000.-