Watch List notes:

ISLAMIC, 'Abbasid Caliphate. Al-Ma'mun, AH 199-218 / AD 813-833. Dirham (Silver, 25 mm, 2.87 g, 9 h), Samarqand, AH 200 = AD 815/6. SICA III, 901. Rough area on the reverse, otherwise, extremely fine.