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\", impeccable 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. \"