Watch List notes:

ABBASID: al-Ma'mun, 810-833, AR dirham (2.84g), Madinat Zaranj, AH207, A-223.4, citing Dhu'l-Yaminin above reverse field, followed by a'azzahu Allah and the governor Ibn al-Qusi below, bold VF to EF, R. Dhu'l-Yaminin, "possessor of the two right hands", actually refers to the first Tahirid ruler, Tahir b. al-Husayn, who died early in the year AH207. This type can alternatively be considered a Tahirid rather than 'Abbasid coin.

Estimate: 180-240 USD