Watch List notes:

ABBASID: al-Ma'mun, 810-833, AR dirham (2.94g), Arminiya, AH217, A-223.4, Vardanyan-85 (same dies), citing the caliphal prince as al-'abbas bin / amir al-mu'minin on the reverse field, VF, RR.

Estimate: 400-500 USD