A HISTORICALLY IMPORTANT ANCIENT EARLY ISLAMIC UMAYYAD CALIPHATE AR SILVER DIRHAM OF THE FAMOUS & JUST KHALIFA 'UMAR IBN ABD AL-AZIZ (UMAR THE SECOND). DATED 100 HIJRA, MINTED IN AL BASRA.'Umar ibn Abd al-Aziz. Reign AH 99-101 / AD 717-720. Dated AH 100 (AD 719).