QASIMID: al-Mahdi Muhammad, 1697-1718, AR dirham (4.27g), NM, AH1114, A-1141.1, circular royal legend, the name al-mahdi in the center, date by the reverse rim (weak but certain), strong EF, RR. Average weight of type A-1141.1 is about 3.8g.
Estimate: 90-120 USD