1. Nine-year rough version: The main features are thick hair, thick font, round head with the initial of the year, hidden points on the mouth, frequent (occasional) Chinese characters broken, and bumper harvest on the back, similar to the back of three years.

2. Nine-year Fine Wool Edition: Its main features are: the whole coin is exquisitely carved, and the degree of exquisiteness is the highest in the big head series. The hair is a little bit, the beard has a strong three-dimensional effect, the lower part of the beard is three or four locks (the middle hair version is only two locks, which is a simple way to distinguish the middle hair version from the fine hair version), the back is golden and small, and a small internal tooth is missing at nine o'clock (the place where it is easiest to distinguish the back of the nine-year fine hair for three years), and the left ear is closed and the lower ear is inclined.

Three, nine-year-old hair plate: its main features are: the overall hair is thicker than the hair plate, and the hair is finely carved; The font is thicker, the hair is thinner, and the back is a bumper harvest, similar to the back of three years.

4. Nine-year Small Golden Harvest Edition: Its main features are: portraits and fonts are in the middle of nine years, with a small golden harvest on the back (a circle smaller than ordinary golden harvest, far away from the internal teeth, so it is called small golden harvest), a small internal tooth missing from the golden harvest surface at nine o'clock, and the upper left ear is open (please note that the nine-year fine wool edition is also a small golden harvest, but this ear is closed without awning, just like this version.

Five, nine years fine wool three years later edition: its main features are: the whole coin is finely carved, the head is the same as the nine-year fine wool edition, and its difference from the nine-year fine wool edition is mainly in the golden harvest face: Dajiahe (the same as the three-year later edition), there is no shortage of small internal teeth at nine o'clock, the left ear is full of awning, and the left lower ear is not full of awning.

Extended data:

Yuan Datou was one of the major currencies in circulation during the Republic of China. "Yuan Datou" is the common name of Yuan Shikai's series of coins. To be precise, it is called "Yuan Shikai's elephant carrying golden harvest silver coins". In order to rectify the monetary system and draw a silver coin, the Beiyang government promulgated Article 13 of the National Monetary Regulations in February of the third year of the Republic of China (19 14) and decided to implement the silver standard system.

The National Monetary Regulations stipulates: "Cooper's pure silver price is 648 cents, hence the name Yuan", "one silver coin, with a total weight of 72 cents, 89 silver coins and one copper coin", and "there is no limit to the number of silver coins used", that is, one silver coin is the standard lending currency, and the legal compensation is unlimited.

According to this regulation, in February of 19 14, 15, 19 15, a silver coin was successively minted by Mint General Factory and Jiangnan Mint, and the face of the coin was engraved with Yuan Shikai's head, commonly known as Yuan Tou Coin or Yuan Datou.

References:

Yuan Datou-Baidu encyclopedia