CHAGHATAYID KHANS: Orqina Khatun, 1252-1261, AR dirham (1.94g), Almaligh, AH651, A-1982, Zeno-10892 (same dies), some very light hornsilver, mostly on the obverse, clear mint & date, unusually clear reverse, VF to EF, R. The Zeno specimen cites the date as 654 rather than 651. The final digit of the date is inscribed in abbreviated form, which I interpret as the form of "one" that is frequent on contemporary Rum Seljuq coins, which consists of an alif followed by a small circle, usually separated but sometimes attached as on this piece.
Estimate: 275-325 USD