80 C. Postal stamp emerald green with overprint "fortress Lorient", horizontal pair with additional double overprint centered over both stamps, in perfect condition mint never hinged, scarce variety, issued only 300 stamps - of it only very few with this overpressure variants, photo expertize Lothar Herbst VP (2017) : "the condition is perfect. ", in existing variety "double overprint divided over two stamps" not by Michel Germany special listed variety! Michel 3.200.- for the "normal" double impression!