ISLAMIC, 'Abbasid Caliphate. temp. Al-Rashid, AH 170-193 / AD 786-809. Hemidrachm (Silver, 23 mm, 2.00 g, 7 h), citing the governor of Tabaristan, 'Abd Allah ibn Qahtaba (AH 174-175 = AD 790-791), Tabaristan, PYE 139 = AH 174 = AD 791. Crowned and draped Sasanian-style bust to right; behind head, AFZUT GDH ('may his kingship increase' in Pahlawi); before head, 'Abd Allah' in Kufic; in outer margin, APD / NWKW ('excellent' and 'good' in Pahlawi). Rev. Sasanian fire altar set on three steps, flanked by two attendants standing facing; to left, date; to right, mint TPURSTAN ('Tabaristan' in Pahlawi). Album 70. SICA I, -. Walker, Arab-Sassanian, p. 150, I.55. Nicely toned. Minor edge crack, otherwise, about extremely fine.