Watch List notes:

ABBASID: al-Ma'mun, 810-833, AR dirham (2.92g), Madinat Arran, AH208, A-223.4, Z-10784, citing the three governors, al-'Abbas b. Khalid, Sadaqa b. 'Ali, and Muhammad b. 'Abd Allah al-Kalbi, as Var-158, but with the obverse annulets of type Var-157, EF, RRR.

Estimate: 1,000- 1,200 USD