ISLAMIC, 'Abbasid Caliphate. Al-Mahdi, AH 158-169 / AD 775-785. Dirham (Silver, 25 mm, 2.89 g, 9 h), Arminiya (Armenia), AH 166 = AD 782/3. SICA III, -. A rare year for Arminiya. Light deposits, otherwise, very fine.
From the Dr. David Majer Collection of Islamic coins, ex Album 39, 21 January 2021, 2160.