ISLAMIC, 'Abbasid Caliphate. temp. Al-Ma'mun, AH 199-218 / AD 813-833. Dirham (Silver, 25 mm, 2.86 g, 3 h), citing Dhu'l Riyasatayn (holder of the two ministries) al-Fadl, the vizier of the caliph al-Ma'mun, Madinat Isbahan, AH 201 = AD 816/7. SICA III, 376. A very attactive example. Extremely fine.
From the Tabib Collection, formed over the past 40 years.