30 C. postal stamp with overprint "fortress Lorient" (2) in mixed franking with 1, 50 Fr. postal stamp on about 10 C. (5 %) postage exceeding tariff rate cover from the "fortress Lorient 17. April 1945" to La Baule with reverse arrival postmark "La Baule 30. 4 45", the cover was poste restante mailed and at destination "La Baule" was the post storage fee of 1 Fr. later calculated - this was with a red machine cancel receipted, without signs and photo expertize Lothar autumn VP (2015) : "a few perforation have slight, small, not disturbing tiny stain spots. The Brewed point at as usual traces of usage on, no lack. The other condition is perfect. Very nice cover! The stamps have only a very small issue from 600 pieces (Michel. No. 2) and 1. 800 pieces (Michel. No. 10) . Covers of the fortress post Lorient are general very rare. "