Watch List notes:

ABBASID CALIPHS, Al-Mamun, 810-811 AD. AR Dirhem (2.86 gm; 24 mm). Last year of Al-Mamun, first year of Al-Mubarak, mint: Madinat al-Salam, year 201 AH. Choice UNC. Lightly toned. Scarce to rare.

Estimate: 75 USD