30 C. Postal stamp "Merkur head" and 70 C. Special stamps issue "Strassburger cathedral" with overprint in type I, properly franked mixed franking on cover from "Ghyvelde 29.07.1940" to Dunkirk with reverse arrival postmark from "30.07.1940", very fine, expertized Roumet, Dreyfus, Calves, Philatelia Paris, Brun and 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 750.-