45 C. And 15 C. Postal stamp "Merkur head" and 40 C. Special edition "100. Day of death from J. M. Jacquard" with overprint in type I, correctly franked mixed franking on cover from "Dunkerque 4.07.1940" to Ghyvelde with reverse arrival postmark from "5.07.1940", faultless condition, 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 1.600.-