ABBASID: al-Ma 'mun, 810-833, AR dirham (2.66g), Arminiya, AH207, A-223.3a, Vardanyan-81var, citing al-Ma 'muni 'Isa & Muhammad b. 'Abd Allah, different from Vardanyan-81 by the lack of the name 'Abdawayh below the obverse field, mount expertly removed, VF, RR.
Estimate: 140-180 USD