4, 50 Fr. postal stamp with overprint "fortress Lorient", on document with cancellation through censorship stamp "fortress Lorient 1. May 1945" and handwritten signature of the Censorship officer Schmitt, in perfect condition, with an issue from only 100 pieces one of the rarities of all issues "German occupation II. world war", detailed photo expertize Lothar autumn VP (2016) : "the condition is perfect. . . Very rare. "