Double-sided coins are both sides of the medallion pattern, the majority of the general round, the thickness of 3mm, diameter 38.1mm to 50.8mm range (generally abroad in inches as 1-1 / 2 ", 1-3 / 4 "and 2") Materials are generally copper, zinc alloy and so on

A wide range of double-sided coins, stamping is not colored (generally do ancient craft) and paint color craft.

With the development of society, double-sided coins have more than just round shape,and various shapes may be a new type of double-sided coin.