50 C. Postal stamp \"Merkur head\", horizontal pair from of the left lower corner of the sheet with sheet counting number \"76735\" and hand stamp overprint in type I, variety \"inverted overprint\", as properly franked multiple franking on cover from \"Ghyvelde north 5-7-40\" to Dunkerque with arrival postmark on the back from 6.7.40, faultless condition, signed Roumet, Behr, expertise Lothar Herbst VP (2018) : \"the condition is perfect. \"