Watch List notes:

ABBASID: al-Ma'mun, 810-833, AR dirham (2.78g), Madinat Arran, AH212, A-223.8, Vardanyan-171, citing the governor Khalid b. Yazid, and the word or name al-a'al (sic) below the reverse, choice VF, RR.

Estimate: 200-260 USD