1 Fr. charity issue "marshal Foch" with overprint in type I, correctly franked single franking on cover from "Ghyvelde 14. 7. 40" to Dunkerque with arrival postmark on the back from 15. 7. 40, faultless condition, 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. "