Watch List notes:

Qarakhanids, Eastern Turkestan. Sulayman b. Yusuf. 423-448/1031-1056. AR dirham (24.6 mm, 3.61 g, 6 h). Kashgar mint, dated A.H. 428. With the title "malik al-mashriq wa sin" (king of the east and of China). Album 3359. Toned Fine. Rare. 

Believed to be struck upon his occupation of the city of Khotan, the capital of Xinjiang province in northwest China.