50 C. Dark rose with overprint \"Occupied area North France\" in type I on single stamp and 50 C. Blackish blue with attached blank field and also same overprint as properly franking on cover from \"Dunkerque 8.08.1940\" to St. Pole Sur more with arrival postmark on the back from 9.08.1940, apart from mould stain is the letter in good condition, expertized Calves and expertise Lothar Herbst VP (2023) \"the ensemble is extremely rare. \", Michel 2.600.-