The specific method of sound identification of ancient coins

Nowadays, many numismatists and collectors like to identify ancient coins by listening to sounds. Due to the texture of ancient coins, the older they are, the more serious the oxidation is, and the more hoarse their sound is when thrown on the cement floor. Generally speaking, the knives, cloth, and coins of the pre-Qin period were all mute.

The coins after the Ming Dynasty are relatively recent and have not been deeply oxidized, and the sound is crisp and loud. If we throw a pre-Qin coins on the ground and there is a crisp sound, the money is not very reliable; Conversely, if the coins of the Ming and Qing dynasties are mute, they will also be suspicious.

There are several steps to identify an ancient coin:

View the money body (texture), the size of the money, the type, the general official regulations, (except for private casting), real money is generally neatly made, the font is beautiful, some of them themselves are from the hands of famous calligraphers, even the emperor's hand, there is no splicing, hyphenation and other crooked fonts. Take a closer look at the production style of the money body, rust color, pulp, fake money, except for very few high imitation products can be made to face masks, most of them have imitation casting shortcomings.

2.Smell the smell of money, raw pit products are generally buried in the ground for many years, with a little earthy smell. Ripe pits, heirlooms due to the short time of entering the soil or not into the soil at all, the money generally has no taste.

But counterfeits, especially those that have just been imitated, smell like a fire (that is, metallic, it's okay to take a current copper cushion and smell it, it's similar to that).The longer the time, the lighter the metallic smell, and if an ancient money fire smells very strong, then it has to be studied carefully. And after the fake money is made, it is generally rusted with acidic corrosive materials, so some fake money can smell peculiar smells.

3. Listen to the sound of money, Nowadays, many numismatists and collectors like to use the method of listening to the sound to identify ancient coins. Due to the texture of ancient coins, the older they are, the more serious the oxidation is, and the more hoarse their sound is when thrown on the cement floor. Generally speaking, the knives, cloth, and coins of the pre-Qin period were all mute.

The coins after the Ming Dynasty are relatively recent and have not been deeply oxidized, and the sound is crisp and loud. If we throw a pre-Qin coins on the ground and there is a crisp sound, the money is not very reliable; Conversely, if the coins of the Ming and Qing dynasties are mute, they will also be suspicious.

4. Look at the money rust, There are no more than two kinds of coins seen today: one is the excavated product (raw pit), and the other is the heirloom product (cooked pit). The excavated items have been buried underground for many years, and their surfaces are covered in patina.

Due to oxidation in the air, there is a layer of slurry on the surface. It is black or copper-colored.

The older the ancient coin, the more impurities such as tin and lead are lost, and the more muffled the sound sounds. On the contrary, the more recent the age, the crisper the sound.

The real voice is muffled, and the fake voice is crisp.

Hello. With the scientific side.

To distinguish the fake rust and fake self-color of fake money. In the identification of ancient coins, it is quite important to distinguish the authenticity of patina and copper color, because it is difficult to absolutely determine the authenticity of some counterfeit DAO coins from the character form alone, and the method of identifying rust color is simple. Third, familiarize yourself with the basic characteristics of counterfeit money.

To identify counterfeit money, it is necessary to understand the basic characteristics of the era and individual characteristics of real money in each era, as well as the basic characteristics of counterfeit money. The surface of the counterfeit coin is uneven, the positive and negative sides of the counterfeit coin are not the same, there are always traces around the chiseled text, the coins made by the sand turning method are slightly smaller and thinner than the real money, etc., understand the basic conditions of the counterfeit currency and the forgery method, and carefully observe, you can find the counterfeit coin. Fourth, to master the knowledge related to the identification of ancient coins, you should understand monetary theory and extensive historical knowledge.

I hope I like it.

This is an imitation of yours, and the money used to be called a string of money. It means that at that time, the money was threaded together in strings. Therefore, the square hole in the middle of the real ancient money is worn because it is strung with iron wire, and it will not be so sharp and square!

There are only two kinds of coins seen: one is excavated and the other is heirlooms. The excavated items have been buried underground for many years, and their surfaces are covered in patina.

The heirloom is also oxidized by the air.

effect, there is a layer of slurry on the surface. It is black or copper-colored.

Copper is a relatively stable metal that does not rust easily at room temperature. It takes decades, if not hundreds of years, for copper oxide to be generated

basic copper carbonate, etc.

Copper oxide is formed.

The size of the bits is different, showing yellow,

Orange-red, bright red

dark brown and other different colors, commonly known as "".

jujube skin red", chestnut shell", etc.

The surface of the excavated coins is deeply stained with rust, and because its molecular structure is stable and compact, the real rust is not easy to wipe off. This is not the case with counterfeit rust, which is mostly on the surface of coins and is called "floating rust."

or "powdery rust, relatively frivolous, easy to fall off, often by alkali."

As soon as the water is boiled, the fake rust made will be vulnerable.