Watch List notes:

ABBASID: al-Ma'mun, 810-833, AR dirham (2.95g), Madinat Zaranj, AH199, A-223.4, Lowick-2484, citing only the vizier by his title Dhu'l-Ri'asatayn, and the word al-mashriq ("the East") below the obverse field, rare variety of a rare date, bold VF, RR.

Estimate: 150-200 USD