Watch List notes:

SELJUQ OF RUM: Kayka'us II, 1245-1249, AR ½ dirham (1.32g), Konya, AH647, A-1224, Izmirlier-, struck from special dies for the half dirham, style as the AH647 full dirham (Izmirlier-523), appears to be unpublished, VF-EF, RRR. Izmirlier lists several varieties of the half dirham for Kayka'us II, but only from the mint of Sivas, none from Konya.

Estimate: 300-400 USD