ISLAMIC, 'Abbasid Caliphate. temp. Al-Ma'mun, AH 199-218 / AD 813-833. Dirham (Silver, 23 mm, 2.84 g, 10 h), citing Dhu'l Riyasatayn (holder of the two ministries) al-Fadl, the vizier of the caliph al-Ma'mun, Madinat Isbahan, AH 199 = AD 814/5. SICA III, 360. Some scratches, otherwise, good very fine.
From the Tabib Collection, formed over the past 40 years.