Abbasid Caliphate, Al Amin (AH 193-198 / 809-813 AD), Silver Dirham ,2.83gms , AH 193, Madinat Al Salam, very fine, very scarce. Note: Abu Musa Muhammad bin Harun also known Al-Amin, succeeded his father, Harun al-Rashid, in 809 and ruled until he was deposed and killed in 813, during the civil war by his half-brother, Al-Ma’mun.