Pre-reform issues, Tabaristan ('Abbasid governors). Abdallah b. 'Arif. AH 176 / AD 792. AR Hemidrachm (23.4mm, 1.73 g, 8h). TPWLSTAN (Tabaristan) mint. Dated PYE 141 = AH 176 (AD 792). Obverse: Sasanian bust with star right of crown; 'Abdallah to right of bust and bin 'Arif in second marginal quadrant. Malek 136; Album 70A. Good VF, toned. Very rare. This type, with the governor's patronymic in the obverse margin, was only struck in this year
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