80 C. Postal stamp green with overprint \"fortress Lorient\" with left attaching likewise overprinted blank field, in perfect condition mint never hinged, without signs, with blank field are only approximate 30 piece possible - in that case with printing machine number \"1\" even only 3 pairs of this kind, photo expertize Lothar Herbst VP (2015) : \"the preservation is perfect. Due to the small issue from only 300 stamps are these very rare. These special feature comes only 1 time in the sheet before, so that only approximate 3 pieces possible are. \" - rarity the issues \"German occupation II. World war\"