5 Kc. With at the bottom attaching, likewise overprinted blank field, in of the perforation prefolded with right attaching margin of sheet in sound mint never hinged exceptional quality, among others expertized Mahr BPP as well expertise Robert Brunel VP (2022) "perfect. With at the bottom attached blank field is the stamp extremely rare and lies in mint never hinged condition for the first time before", Michel 3.000.-