ISLAMIC, 'Abbasid Caliphate. TAHIRID: Talha ibn Tahir, 822-828, AR dirham (3.04g), Mint: Abarshahr, Dated: AH210, A-1393, rare mint for the Tahirids, choice VF, RARE. The dynasty was founded byTahir ibn Husayn, a leading general in the service of theAbbasid caliphal-Ma'mun.