Abbasid: Harun al-Rashid (786-809), silver dirham (2.81g), al-Muhammadiya mint, AH 190 (805-806 CE) (error for AH 180). Contemporary imitation, characterized by numerous inscriptional errors and by style. Type citing Ja'far, which is not known for AH 190, as Ja'far al-Barmaki had already passed. We can also rule out the possibility of a mule, due to matching crude style on both the obverse and reverse. Extremely fine. Extremely rare.