Tamgha of Duwa, decoration and mint-name around / Kalima in crude arabic. 22mm, 1.81 grams. Mint of Madinat al-Rijal Tirmidh. cf.Zeno #295998.

Undated crude type. 

Duwa, also known as Du'a, was khan of the Chagatai Khanate (1282–1307), appointed by Qaidu in 1282 to govern the Chaghatayid realm. He was the second son of Baraq. He was the longest reigning monarch of the Chagatayid Khanate and accepted the nominal supremacy of the Yuan dynasty as Great Khan before his death.