Watch List notes:

ISLAMIC, 'Abbasid Caliphate. temp. Al-Ma'mun, AH 193-218 / AD 809-833. Dirham (Silver, 24 mm, 2.91 g, 10 h), citing Harthama, Madinat Isbahan, AH 198 = AD 813/4. SICA III, 352. Lightly toned and attractive. Good extremely fine.