In the center of this Nanbu Lock Coin has  Chinese characters Jin Yi Liang which has the meanings of a lot of gold. At the four corners of this coin are Chinese Characters Nan Bu Ma Shi which represents horse racing and stock market in that region.   This coin which has a lock shape is specially used to protect successfully your luck at the horse racing and stock market. In addition, the mystic knot on the top stands for wealth and success.  Dimension:  approx. 2 1/2" in diameter and made out of copper.  How to Use it? You can carry such Nanbu Lock Coin all times.