70 C. Postal stamp orange with overprint "fortress Lorient" as corner margin piece lower right with date of printing "23.1.42", variety "inverted overprint", in perfect condition mint never hinged, unsigned, issued only 300 examples - of it only a few with inverted overprint - as corner margin piece with date of printing and variety "inverted overprint" probably the only one exists! Photo expertize Lothar Herbst VP (2017) : "the condition is perfect. "