Mercia, Offa (757-796), Penny, Group II with portrait, Ibba, obv. diademed bust right, IBBA in front, rev. O-F-R-M in angles of a floreate cross with lozenge centre containing cross and pellets, 18.9 grains/1.26 grams (N.300; cf. Blunt 62), small chip (7 o'clock) and outer beading broken away (8-10 o'clock), otherwise mint state with a superb portrait, an exceptional specimen