Watch List notes:

KHWARIZMSHAH: Mangubarni, 1220-1231, AR dirham (3.13g), NM [Ghazna], ND, A-1745.1, ruler's name and title jalal al-dunya wa'l-din // the caliph's name, al-nasir li-din Allah, choice VF, RRR. The dies were engraved by the same staff that produced his father's equivalent (A-1721) and the issue in the name of Chingiz Khan (A-1967), and it is much rarer that either of those two. It must have been struck very briefly, perhaps just after the Mongol troops left Ghazna en route to the Indus River, chasing Mangubarni's father, 'Ala al-Din, before the Mongols returned to the region. It may have been struck outside of Ghazna in the same general area.

Estimate: 500-600 USD