ISLAMIC, Anatolia & al-Jazira (Post-Seljuk). Artuqids (Mardin). Najm al-Din Alpi, AH 547-572 / AD 1152-1176. Dirham (Bronze, 29 mm, 12.22 g, 7 h), uncertain mint (Mardin?). Two diademed heads facing, turned slightly away from one another; legend around in Arabic, 'la ilaha illaallah / muhammad rasul allah / al-mustanjid billah / amir al-mu'minin'. Rev. Youthful female head facing within beaded circle; around within beaded circle, legend in Arabic, 'najm al-din / malik diyarbakr / alpi bin Il-ghazi / bin artuq'. Spengler & Sayles 30. Good very fine.

The heads on the obverse may represent the Gemini constellation, in which case the female head on the reverse would represent Virgo. Gemini and Virgo are the day and night domicile of the planet Mercury