On the front, you can see the chinese dragon, the symbol of the great Chinese empire (Great Yuan Empire). In the background you can see a stamp with a mandate to mobilise soldiers by the Mongols lead by Djengiz Khan.
The back has the shape of a Mongol shield with two typical Mongol swords. Horizontal it says Taizu or Founder of the dynasty which arose after the split-up of the great Mongol empire.
Vertical it says Great Khan, referring to the Khan rulers of which descendants fulfilled crucial positions in several governements till recenently.
Diameter 5 cm, 5 mm thickness
Trackable at geocaching.com with its own icon.