Watch List notes:

ABBASID: al-Ma'mun, 810-833, AR dirham (2.80g), Ma'din al-Shash, AH199, A-223.4, citing Dhu'l-Ri'asatayn, inscribed al-mashriq ("the east") beneath the obverse field, VF, RR. Ma'din al-Shash was a silver-mining town near the modern city of Tashkent in Uzbekistan.

Estimate: 250-350 USD