Uncertain, 4th-6th centuries. Weight of 12 Grammata (Bronze, 17 mm, 13.38 g), a uniface square commercial weight with plain edges. Facing busts of two emperors, both nimbate, draped and cuirassed; below, IB; all details engraved in outline and the faces and letters inlaid in silver. Rev. Blank. CPAI -. MAH 309 = Pondera 4233. Very fine.

From a European collection, formed before 2005.