Ask for the name of the copper coin, and the bulge is not the mother money?

The back of this direct reading of the Qingli is a flowing copper, not a giant moon, there is no such version, the stars and moons of the Northern Song Dynasty are very regular. The so-called mother money (referring to the Northern Song Dynasty alone, the Song mother and the Qing mother are not a concept, and the Song money does not have the so-called concept of carving the mother), there is a lot of controversy in the determination of the spring world, but there are a few points that are the consensus of everyone, one, repair and wear, two, the text is regular, handsome, and the strokes are clear and not bonded. Third, this is the most important point, compared with the same version (it must be the same version, different versions are meaningless) the diameter should be larger, because the copper water has a shrinkage rate, and the sub-money cast with the mother money as the mold must be smaller than the mother money, because the copper water will shrink after cooling.

I specialize in playing the Northern Song Dynasty, if there is a need in the future, we will communicate with each other, **.

Your two coins are "Qingli Heavy Treasure", not the mother money, and the "Giant Moon" layout is worn on the back, which is relatively few; Xining ingots are common layouts; It can be used as a variety collection, and it must be well preserved!

The mother coin is a standard model coin made by the local finance when a large number of coins were minted in ancient times.

A coin is a physical coin that is carefully carved from materials such as tin, ivory or mahogany according to the design of the coin, and its purpose is to present it to the imperial court for the emperor's approval. Strictly speaking, a money sample cannot be counted as a coin because it is only used as a physical design submitted for approval and cannot be circulated.

How to identify the mother coin: First of all, the mother coin cannot be minted: no matter how fine the coin, there must be a finer "mother coin". The "iron mother" must be made by carving, chiseling, polishing and other methods.

Strict control: any country and regime is strictly controlled by the minting of coins, strictly prevent foreign enemies and private minting, and the "mother money" is a key link in the coinage process, whether it is damaged in the minting bank, or reused after minting, there should be strict institutional constraints and management methods, and it is extremely unlikely to flow into the people.

Extended Materials. How to make mother money:

It is decided that the materials used in many "mother money" including "iron mother" should be durable, but also easy to make, and the money should be made as long as a "mother money" can be turned out of many "wax molds", if the "clay model method" is used, it is necessary to make a number of the same "mother money" as a model.

When using the "mother money" to make the model, the "mother money" should not only be hard and wear-resistant, but also the material should be relatively extensive, the knife is not broken and not crisp, the lines are fine and deep, the Song people have a variety of materials to choose from, we only use copper and tin compared with the two, in terms of tin "iron mother", all factors are better than copper thorns, and tin has been able to smelt in the two Song Dynasty periods, why should the ancients give up the easy and difficult, abandon the tin to take the copper "mother money".

The mother money is a model used for sand casting, and the pattern is the same as the child money, but its own technology and material are much better than the child money.

In addition to the Baoquan and Baoyuan bureaus set up by the Ministry of Industry and the Ministry of Households, the back text of the Manchu Kangxi money is Manchu, and the back text of the Tongbao money drummed and cast by other foreign money bureaus is the Manchu Jidi on the left, and the corresponding Chinese characters on the right. For the convenience of collection and research, later generations compiled the names of the Manchu and Han Dynasty bureaus together to form a rhyming and smooth Kangxi Qian "memorization poem". Shiyun:

Tongfu Lindongjiang, Xuanyuan Su Jichang. Nanhe, Ning, Guangzhou, Zhejiang, Taigui, Shaanxi, Yunzhang. This poem includes the twenty innings of "Kangxi Tongbao" money full of Chinese.