10 C. postage stamps issue "Merkur head" and 90 C. special edition "Guillotiere bridge in Lyon" with hand stamp overprint "Occupied area North France" in type I, properly franked mixed franking on cover from Ghyvelde 29.07.1940 to Dunkerque with arrival postmark on the back from 30.07.1940, Michel number 159 above few short perfs, expertise Lothar Herbst VP (2023) "the other condition is perfect. the stamps are only in very small number of pieces known, therefore are they very rare. ", Michel 700.-