Islamic - Early Pre-Reform。ARAB-BYZANTINE: Facing Bust, ca. 610-650, AE follis (5.16g), NM, "year 17", A-3508X, coarsely engraved caricature of a royal bust, holding cross, with meaningless symbols left & right, no legends / 5-point star above capital M, officina area flat, trace of mint name below, NNNO to left, date to right, unusual type, either pre-Arab or early Arab, Fine to VF, R.