Watch List notes:

ABBASID, AL-MA'MUN (194-218h), Dirham, Naysabur 203h. Reverse: citing the Shi'ite al-Rida as heir to the caliphate. Weight: 3.05g Reference: Lowick 2349, citing a single example of this mint and date. About extremely fine and extremely rare
(800-1000 GBP)