Yuan datou is known as the treasure of silver dollar in the field of currency collection. It is the most widely circulated and influential silver dollar among nearly one thousand kinds of modern silver COINS in China. It is also an important role in the transformation of Chinese currency system in modern times. Because it is physical currency, between people's recognition of precious metals, and a strong sense of historical and cultural identity, so the collection of people are not a few. Yuan big head design is distinctive, use yuan shikai head, very image, admire sex dye-through. In addition, the issuance of a relatively long time, the national development in the republic of China period is backward, this set of silver COINS issued very symbolic significance.