Watch List notes:

ABBASID: al-Ma'mun, 810-833, AR dirham (2.90g), al-Raqqa, AH199, A-223.4, Lowick-655, with the phrase tâhir lillah above and the governor's name Sa'id b. Yahya below the reverse field; lovely strike, EF, RRR. A similar example sold at the St. James Auction 38, Lot 93.

Estimate: 950-1,100 USD