Abbasid, al-Ma'mun 'Abd Allah, gold dinar, AH 196, "lil-khalifa al-imam" type

Abbasid: al-Ma'mun 'Abd Allah, gold dinar (4.21g), AH 196. "lil-khalifa al-imam" ("for the caliph, the Imam") in upper and lower reverse fields. Lustrous, well-struck.