ISLAMIC, 'Abbasid Caliphate. temp. Al-Ma'mun, AH 199-218 / AD 813-833. Dinar (Gold, 19 mm, 4.07 g, 10 h), citing the vizier of Al-Ma'mun, Dhu'l-Riyasatayn with his laqab 'Ayn, Wasit (?), AH 200 = AD 815/6. Album 222. Somewhat clipped, otherwise, very fine.