Abbasid Governors of Tabaristan. Umar ibn al-'Ala (AD 771-780) Hemidrachm PYE 125 (AH 160 / AD 776) MS NGC, Tabaristan mint, A-57 (R), Malek-77. Type with Umar's patronymic in Pahlavi before bust and his full name in Arabic in the margin. Silk Road Hoard.

HID09801242017

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