25 C. Postal stamp "Merkur head" blackish opal green with vertical incomplete overprint of the type II on single stamp, mint never hinged, very fine, only approximate five unused / mint never hinged examples known, expertized Roumet, expertise Lothar Herbst VP (2025) "the stamp point at reverse manufactured small black affixed spots from colour on. The other condition is perfect. ", Michel 5.000.-