Watch List notes:

ISLAMIC, 'Abbasid Caliphate. temp. Al-Ma'mun. AH 199-218 / AD 813-833. Æ Fals (18mm, 2.14 g, 6h). al-Quds (Jerusalem) mint. Dated AH 217 (AD 832/3). Cf. Shamma 4 (for type); Sofaer 191 (same dies; Album 291. Good VF, earthen green patina.