Watch List notes:

ABBASID: al-Ma'mun, 810-833, AV dinar (4.13g), al-'Iraq, AH199, A-222.12, mint name below the obverse field, citing the vizier as Dhu'l-Ri'asatayn, a few very light scratches in the field, VF, R, ex Dabestani Collection. The actual mint was likely at Madinat al-Salam.

Estimate: 240-300 USD