Watch List notes:

ABBASID: al-Ma'mun, 810-833, AV dinar (4.25g), NM, AH203, A-222.12, citing the vizier as Dhu'l-Ri'asatayn below the reverse and with the location al-'iraq below the obverse; wonderful bold strike! EF to About Unc.

Estimate: 350-450 USD