50 C. \"Merkur head\" with overprint \"Occupied area North France in type I\", vertical pair as properly franking on local letter with cancellation \"Dunkerque 11.07.1940\", faultless condition, issued only 3.000 pairs, expertise Lothar Herbst VP (2023) \"the condition of the stamps is perfect. The pair became from date stamp erroneously not touched. The letter point at time typical use- / transport traces on. \", Michel 600.-