Watch List notes:

ISLAMIC, 'Abbasid Caliphate. temp. Al-Mahdi, AH 158-169 / AD 775-785. Fals (Bronze, 20 mm, 1.64 g, 5 h), citing the governor Yazid ibn Usayd, struck in Armenia, AH 164 = AD 780/1. Vardanyan 2016, 42. Rare. Patina stripped, otherwise, very fine.