5 C. Postal stamp "Merkur head" with vertical incomplete overprint of the type II on single stamp, variety "inverted overprint - top down" mint never hinged, very fine, only approximate five unused / mint never hinged examples known - as variety "inverted overprint" however only this piece - unique, expertized Tust BPP, Roumet and expertise Lothar Herbst VP (2025) "the condition is perfect. ", Michel 6.000.-