Isbahan, dirham, 199
23.5 mm, 2.93 grams, AR
Iran
The ‘Abbasid caliphate
al-Ma’mun — Caliph, ‘Abbasids
al-Fadl b. Sahl — Amir and Vizier, dynasty unknown
Tiesenhausen-1873, 1694 rev
Tiesenhausen-1873, 1693 obv