Tamgha of Duwa, Kalima, dated to 736 AH (1335 CE). 19mm, 1.30 grams. Mint of Otrar. Album 1998; cf.Zeno #302476.

Changshi (or Jenkshi) Khan was one of the last effective khans of the Chagatai Khanate. His father was prince Ebugen who was the son of Duwa, the Chagatai Khan.