18 Kr. Gray brown, large shield, having bright colors, clearly embossed, excellent centered and perforated stamp, neat with centric mounted single circle postmark "FRANKFURT A / M. 6 11 74" cancelled. Expertized Pfenniger with double, on the base mounted signature as well photo certificates Hennies BPP ". . . In this excellenten condition very rare. " and Sommer BPP". . . In perfect condition very rare. ", Michel 2.800.-