This is an Abbasid silver dirham coin from the reign of Caliph Al-Mansur, who ruled from 754 to 775 CE. Some key facts about Al-Mansur and his reign include: He is considered the real founder of the Abbasid dynasty, consolidating its power and establishing its capital in Baghdad. Al-Mansur centralized the administrative and military functions of the empire. The coin likely dates back to around 770 AD and may have been minted in Muhammadya. Dirhams like this one were used as currency throughout the Abbasid Caliphate. The inscriptions on the coin are in Arabic and likely include religious phrases and the name of the caliph. Silver, approx 2.8 gr This coin is in extra fine condition.