80 C. Postage stamps issue "peace allegory" and 20 cent postage stamps issue "Merkur head" with hand stamp overprint in type I, properly franked mixed franking on cover from "Dunkerque 16.07.40" to Ghyvelde with on the back arrival cancel from 17.07.1940, very fine, expertized Calves, Dreyfus and Roumet, expertise Lothar Herbst VP (2025) "the condition is perfect. The stamps are only in very small number of pieces known, therefore are they very rare. ", Michel 1.000.-