'Abbasid caliphs
al-Mahdî Muhammad, 158-169 H./775-785 AD. Dirham 169 H., Hârûnâbâd, in the rev. field the name of the province and the names of the caliph, the prince Hârûn as nominal governor of Armenia and Hasan (ibn Qahtaba) as deputy governor of Armenia. Lowick/Savage 866; Vardanyan 187; Bonner 2. 2.91 g.; Rare Good very fine
Acqu. Stephen Album, Santa Rosa, list 177, March 2002, no. 119.