ISLAMIC, 'Abbasid Caliphate. temp. Al-Mahdi, AH 158-169 / AD 775-785. Hemidrachm (Silver, 23 mm, 1.92 g, 3 h), citing the governor of Tabaristan Sa'id ibn Da'laj (AH 159-162 = AD 776-788), Tabaristan, PYE 125 = AH 160 = 776/7. Crowned and draped Sasanian-style bust to right; behind head, AFZUT GDH ('may his kingship increase' in Pahlawi); before head, 'Sa'id' 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 58. SICA I, 411. Walker, Arab-Sassanian, p. 140, 277. Some marks, otherwise, good extremely fine.