Watch List notes:

'Abbasid Caliphate. temp. Al-Ma'mun. AH 199-218 / AD 813-833. AR Dirham (24.7mm, 2.88 g, 10h). Wasit mint. Dated AH 200 (AD 815/6). Citing al-Hassan and Dhu'l-Riyasatayn. Lowick 1485; SICA 3, -; Qatar -; SCC -; Album 223.4. Cleaned. Good VF. Rare.