Alid of Tabaristan: al-Hasan ibn Zayd (864-884), silver dirham (3.34g), Jurjan (Gorgan) mint, AH 268 (881-882 CE). Al-Hasan cited with title "al-da'I illa'l-haqq" (the caller upon truth). Rare.

Alid of Tabaristan: al-Hasan ibn Zayd (864-884), silver dirham (3.34g), Jurjan (Gorgan) mint, AH 268 (881-882 CE). Al-Hasan cited with his title "al-da'I illa'l-haqq" (the caller upon truth). Album 1523 (R). Very fine. Rare. Al-Hasan ibn Zayd was a claimed descendant of 'Ali ibn Abi Talib who founded the Alid Zaydid dynasty in Tabaristan. His reign was marked by rebellions against the Abbasid Caliphate and his promotion of Zaydi Shi'ism in a predominantly Sunni region.