Watch List notes:

ISLAMIC, 'Abbasid Caliphate. temp. al-Mahdi. AH 158-169 / AD 775-785. AV Dinar (20mm, 4.25 g, 12h). Unnamed (Dimashq [Damascus]) mint. Dated AH 163 (AD 779/80). AGC I 51; Album 214; ICV 378. Good VF, small scratch on reverse. Struck with slightly worn dies.