Watch List notes:

ISLAMIC, 'Abbasid Caliphate. temp. Al-Mahdi, AH 158-169 / AD 775-785. Dirham (Silver, 25 mm, 2.77 g, 2 h), citing the governor Yazid, al-Abbasiya, AH 166 = AD 782/3. SICA III, 1030. Minor edge crack, otherwise, about very fine.