Watch List notes:

ISLAMIC, Seljuks. Rum. Ghiyath al-Din Kay Khusraw II bin Kay Qubadh. AH 634-644 / AD 1237-1246. AR Dirham (22mm, 2.92 g, 12h). Sivas mint. Dated 638(?) (AD 1240/1). Cf. Broome 270D (for type); cf. Izmirlier 459 (same); Album 1218; ICV 1340. VF, toned, traces of die rust on obverse.