Watch List notes:

ISLAMIC, Arabia. Zaydis (Rassids). al-Hadi, AH 284-298 / AD 897-911. Dinar (Gold, 19 mm, 2.93 g, 12 h), citing the Zaydi Imam al-Hadi as 'al-Hadi ala, al-Haqq Amir, al-Mu'minin ibn Rasul Allah', San'a', AH 293 = AD 905/6. Bernardi 373El. Very rare. Good very fine.