Watch List notes:

Abbasid, al-Ma'mun (194-218h), dirham, Madinat Arran 214h, rev., citing Khalid b. Yazid and Ibrahim b. 'Attab al-Ma'muni, 2.73g (Vardanyan -; cf Stephen Album Rare Coins auction 37, 11 June 2020, lot 292), very fine to good very fine, rare