Watch List notes:

ABBASID, Al-Rashid, (AD 786-809/AH 170-193). AR Dirhem (2.79 gm; 26 mm). Obverse, Shahadah, mint "Balkh" year 187, reverse, Shahadah for prophet Mohamad and naming Ma'mun as heir to the throne. Choice Good VF. Toned. Extremely rare.