Which dynasty's coin was the ancient Longyuan Shengbao?

The real name of "Longyuan Shengbao" you mentioned is Guangxu Yuanbao, so it is called Longyuan because of Longlin's money.

Characteristics of one or two silver coins in Guangxu Yuanbaohu

First, one or two banks of the Ministry of Finance are the biggest mechanism in China.

Two, the word "two" is divided into two versions from "person" or "entry".

Third, the market value of money is high, and the market value should be more than one million.

4. Specifications and dimensions of this currency: the local currency diameter is 43.4 mm, the starting dimension of side height is 3. 1 mm, the ratio is 14: 1, and the weight of one or two standard containers should be 37.3g.. Origin of dimensions and specifications: The Mint of Hubu entrusted the Bank of Zheng Jin, Japan to handle molds, and consulted the Mint of Osaka, Japan. The Bureau believes that the coin diameter should be 14 times or 15 times based on the convex edge, and it should be 17 to 18 times based on the coin thickness.

5. Actual production quantity of this currency: with the approval of Yuan Shikai, a total of six or seven thousand local currencies were trial-produced.

6. This coin is the one with the most exquisite craftsmanship, perfect carving and the strongest sense of relief among all Yang Long silver coins in China (including all silver coins issued abroad). The mirror surface is flat and smooth, and the decorative pattern is customary line (customary line-the academic language of modern mechanical drawing, that is, the intersection of plane and plane, plane and surface, surface and surface). ) I can see it clearly, especially one or two series of silver coins at home, which are beautifully cast, with deep mouths, lines and side teeth, and are completely foreign-made sample coins. As a currency that can be circulated at any time (although it is not in circulation), its secret anti-counterfeiting is unprecedented. The surface of the coin is thick and mellow, and even amateurs who have no research on silver dollars can't put it down, which is very ornamental.