Islamic, 'Abbasid Caliphate (uncertain attribution) temp. Al-Rashid, AH 170-193 / AD 786-809 AR Hemidrachm (Silver, 2.02g, 24mm) Anonymous type, Tabaristan mint, PYE 135 = AH 170 = AD 786/7.
Obv: Crowned and draped Sasanian-style bust to right; behind head, GDH ('kingship' in Pahlawi); before head, 'AFZUT' ('may increase' in Pahlawi); in outer margin, APD / NWKW ('excellent' and 'good' in Pahlawi).
Rev: Sasanian fire altar set on three steps, flanked by two attending priests (mabedh) standing facing; to left, date; to right, mint TPURSTAN ('Tabaristan' in Pahlawi).
Ref: Album 73. SICA I, 426. Walker, Arab-Sassanian, 307.