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 an edition from only 100 pieces one of the rarities of all issues "German occupation II. World war", detailed photo expertize Lothar Herbst VP (2016) : "the condition is perfect. "