1.50 Fr. postal stamp dark red brown with overprint "fortress Lorient", variety "double overprint", on document with cancellation through censorship stamp "fortress Lorient 1. May 1945" and handwritten signature of the Censorship officer Schmitt, issued only 1.800 stamps - of it only a few with double overprint, photo expertize Lothar autumn VP (2018) : "the condition is perfect. "