al-Ma'mûn, 194-218 H./810-833 AD.

Silver Dirham 198 H., al-Madâ’in. Name of the general Harthama. 2,86g. Lowick/Savage 1160.

Extremely rare. Very fine.

One of three known. The minting in al-Madâ’in, ancient Ktesiphon, was done only by al-Ma’mûn’s troops during the siege of Baghdad. The only other specimen available was auction in 2014; NGSA 8 (24-25 November 2014), lot 250.