Greek Asia. The Abbasid Caliphate. Umar ibn al-'Ala AH 155-165 (771-782 AD). AR Hemidrachm. Tabaristan mint. PYE 124 / AH 159 / 775/6AD. Obv. Crowned and draped Sasanian-style bust to right; before head Caliph name. Rev. Fire altar flanked by two attendants. Album 55. SICA I, 407. Walker, Arab-Sassanian, 263. 2.04 g. 24.5 mm. EF.
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