50 C. blue in the horizontal pair with overprint type II on cover from PARIS 13. 8. 40 to St. Quen with arrival postmark of the same date, reverse is absent a part the flap, else very fine, very scarce commercially usage after the 9. 8. 40 outside of the area from Dunkirk, signed Roumet with photo certificate, catalogue value for covers till to the 9. 8. 5000,