ABBASID: al-Amin, 809-813, AV dinar (3.83g), NM, AH198, A-220.6, Bernardi-80, with rabbi Allah above and the caliph's name al-Amin below the reverse field, slightly clipped, VF, RRR.
Bernardi know of only three examples of this type, all dated AH197, and this appears to be the first reported example dated 198, the final year of al-Amin's failed attempt to retain the caliphate.
Estimate: 850-1,150 USD