50 cent charity issue "La attic" with hand stamp overprint in type I, properly franked multiple franking on cover from Ghyvelde 9.07.1940 to Dunkerque with on the back arrivals cancel from 10.07.1940, expertized Calves, Dreyfus, Roumet and expertise Lothar Herbst VP (2025) "the condition is perfect. The stamps are general only in very small number of pieces known, therefore are they very rare. In this ensemble as multiple franking extremely rare. ", Michel 1.400.-