2. After the Revolution of 1911, the provisional government of the Republic of China with Sun Yat-sen as interim president was established in Nanjing. In March, the Outline of Monetary System was published, and the silver dollar was determined as the monetary unit. It is stipulated that the total weight of each unit of silver coin is 26 grams, which is about six cents, nine cents and seven cents, and the fineness is 96%-96.9%. At that time, the founding commemorative coin with Sun Yat-sen's head was cast. Due to the small number of castings, it is difficult to see in the market.

3. 19 14, Yuan Shikai promulgated the National Monetary Regulations and the Detailed Rules for the Implementation of the National Monetary Regulations in the name of the President in Beijing, stipulating that "yuan" is the price unit, and the weight of each silver dollar is six yuan and forty-eight cents. June, 5438+February this year, Tianjin Mint began to cast silver dollars engraved with Yuan Shikai's head. After 19 15, the provinces imitated casting, and by 1923, * * * 75 million pieces were cast.