Bull left, legends around the bull: abu'l fath Muhammed bin al-sultan, circular marginal legend (mint and date, mostly off-flan) / Horseman holding spear RIGHT, ara Arabic inscription As-sultan al-azam ala al-Dunya wa ud-Din spread around the horseman and in the margin. Mint of Qunduz. 23mm, 3.92 grams. Tye 243.6 var (horse left in Tye - not types with the horse right are listed in Tye!).
Rare type. These large bronze (or very debased billon) coins were also issued (with little modification) by Ghengiz Khan. These coins are rarely seen.
Mohamed Khwarezmshah was the most famous and powerful of the rulers of Khwarezm, though he is most known for his downfall and the story of the great expansion of the Empire of Genghis Khan. In 1218, Genghis Khan sent some emissaries to the Shah, but when he executed the Mongol diplomats in defiance of the emerging great power, Genghis retaliated with a force of 200,000 men. In February 1220 the Mongolian army crossed the Syr Darya and launched the Mongol invasion of Central Asia. The Mongols stormed Bukhara, Samarkand, and the Khwarezmid capital Urgench. The Shah fled and died some weeks later on an island in the Caspian Sea.