ISLAMIC, Seljuks. Rum. 'Izz al-Din Kay Ka'us II, first sole reign, AH 643-647 / AD 1245-1249. Dirham (Silver, 17 mm, 1.24 g, 1 h), Sivas, AH 64[4] = 1246/7. Citing the ʿAbbasid caliph al-Mustaʿsim billah (AH 640-656 / AD 1242-1258) within a square, ‘al-imām al-Mustaʿṣim / billāh / amīr al-muʾminīn’ (‘Imam al-Mustaʿsim billah, Commander of the Believers’ in Arabic); in the margin, ‘sana / [arbaʿa] / wa arbaʿīn / wa sitta miʾa’ (‘Year 64[4]’ in Arabic). Rev. Within a dotted square, ‘al-sulṭān al-aʿẓam / ʿIzz al-Dunyā wa al-Dīn / Abu’l-Fatḥ Kaykāwus / ibn Kaykhusraw’ (‘The supreme sultan, ʿIzz al-Dunya wa al-Din Kay Kaʾus son of Kay Khusraw’ in Arabic); in the margin, ‘ḍuriba / hādhā / al-dirham / bi Sīwās’ (‘This dirham was struck in Sivas’ in Arabic). Album 1223.1. Areas of weakness and with some porosity, otherwise, very fine.