50 C. postal stamp, 70 C. postal stamp and 80 C. postal stamp always with overprint "fortress Lorient" being a correctly franked three colors mixed franking on cover from the "fortress Lorient 23. April 1945" to La Baule with reverse arrival postmark "La Baule 30. 4. 45", without any signs, photo expertize Lothar autumn VP (2015) : "Michel. No. 6 left corner tooth weak tiny stain spot. Michel-no. 7 lower right irregular perforation. All visually undisturbing whatever be tolerated must for a war document from the time 1945. the other condition is perfect and above average good for this visually very representative cover. The stamps have only a very small issue of 1. 800 pieces (Michel. No. 4) and always only 300 pieces (Michel. No. 6, 7) . Covers of the fortress post Lorient are general very rare. "