Watch List notes:

ABBASID: al-Ma'mun, 810-833, AR dirham (2.86g), al-Muhammadiya, AH195, A-223.3a, citing Tahir b. al-Husayn, together with the title mawla al-ma'mun, in the obverse margin, and the name al-Fadl below the reverse field, collector's number in obverse field, VF.

Estimate: 100- 140 USD