1 Fr. special stamp "the overseas France 1940" with overprint in type I, variety "inverted overprint", correctly franked single franking on cover from "Ghyvelde 7. 7. 40" to Dunkerque with arrival postmark on the back from 8. 7. 40, photo expertize Lothar autumn VP (2016) : "the condition is perfect. The stamps are only in very small number of pieces recorded, so that they very rare are. Kofstehende overprints on special stamps are extremely rare. "