ISLAMIC or BYZANTINE. 6th-8th centuries AD. Æ weight of 2 ounces or 20 dirhems (25x20mm, 57.46 g). Polyhedron form decorated with a series of concentric circles. Flat top and bottom. Hendin, Weights 412; Münz Zentrum XXVII, 4185. Dark green patina under earthen deposits. VF.