30 C. postal stamp red with overprint "fortress Lorient" as gutter pair with likewise overprinted empty space, variety "always inverted overprint", in perfect condition mint never hinged, issued only 600 pieces - of it only a few with inverted overprint, as gutter pair with normal vertical overprint the only known copy - unique, photo expertize Lothar autumn VP (2017) : "the condition is perfect. ", Michel Germany special 2017 (France complete revised! ) not listed - was to 2017 unknown!