4, 50 Fr. postal stamp with overprint "fortress Lorient", variety "double overprint - one of it as partial cancel", on document with cancellation through censorship stamp "fortress Lorient 1. May 1945" and handwritten signature of the Censorship officer Schmitt, faultless condition, with a printing 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. "