Watch List notes:

ABBASID, al-Amin Muhammad, 193-198 AH(809-813 AD). AR Dirhem (2.76 gm; 24 mm). (Abu Musa, b. al-Rashid), obverse, Shahadah, reverse,Shahadah for Prophet Mohamad, followed by citing Ma'mun (Amin's brother) as successor, followed by Amin as leader of the faihtful. Choice EF. Lightly toned. Rare this nice.
Estimate: 50 USD