GREAT MONGOLS: Anonymous, 1230s-1250s, AR dirham (3.20g), Herat, ND, A-C1977var, obverse legend qa'an al-'adil, with possibly an additional word above; reverse legend .... / [al-]dirham / darb herat; unpublished variant, not on Zeno and not on CoinArchives, VF, RRR. Partially reconstructed legends cited here, probably correct, though hopefully other examples will eventually be discovered.
Estimate: 90-120 USD