Watch List notes:

ISLAMIC, 'Abbasid Caliphate. temp. Al-Ma'mun. AH 199-218 / AD 813-833. AV Dinar (19mm, 4.16 g, 1h). Citing al-Tahir and Muhammad ibn al-Sari. Unnamed (Misr [Cairo]) mint. Dated AH 205 (AD 820/1). AGC I 95; Album 222.8; ICV 389. VF, slightly wavy flan.