25 C. Postage stamps set "Merkur head" in mixed franking with 75 C. Postage stamps issue "Paul Doumer" with overprint in type I, properly franking on cover from Ghyvelde 21 7 40 to Dunkirk with arrival postmark on the back from 22.07.40, very fine, expertized Calves, Dreyfus, Roumet and expertise Lothar Herbst VP "the condition is perfect. The stamps are only in very small number of pieces known, therefore are they very rare. ", Michel 1.700.- - these franking combination can we offer for the first time!