KHWARIZMSHAH: Muhammad, 1200-1220, AR double dirham (6.20g), [Ghazna], ND, A-1714, generally as #1721, but twice as heavy and with longer inscriptions in four horizontal lines, adding al-sultan al-a'zam on the obverse and citing the caliph al-Nasir on the reverse, bold VF, RRR.
Estimate: 130-170 USD