How can a silver dollar tell the true from the false?

The first is sound discrimination. The older the ancient coins are, the more impurities such as tin and lead are lost, and the duller the sound becomes. On the contrary, the closer you get, the clearer your voice becomes.

Secondly, observe the copper color method. Generally, the materials of ancient coins are divided into bronze, copper, brass and copper. Copper coins are easy to break, brass coins are not easy to break, and white copper is mostly used as sample coins. Before the Ming Dynasty, most coins were made of bronze, but there were no brass coins. If you find brass coins before the Ming Dynasty, you should be more careful.

The third method is boiling water. Red-green rust or black rust passed down from generation to generation is often attached to ancient coins. Real money rust is formed by natural oxidation for a long time and has strong adhesion. Forged fake rust is easy to fall off when boiled in boiling water.

The fourth is the steel needle test method. The rust of ancient coins is hard. Press the needle tip of the steel needle for sewing clothes vertically downward, and the steel needle will fall immediately after it is released. The rust of fake products is often coated with real rust and adhesive, which has certain elasticity, so the steel needle is not easy to fall off.

Style determination method. Each dynasty has its own style of coinage, and whether ancient coins belong to counterfeit money can be identified according to this feature. There is another way to compare versions. Early ancient coins were all hand-cast, and even the mother money used for casting money was hand-carved, so there will be some differences between coins. If you find a batch of coins, their versions are exactly the same, and even some defects are not bad at all, then you should doubt the possibility of counterfeiting.

2. Identify the wrong features of the shape

The appearance thickness, size, specifications, rough and fine workmanship of ancient coins all form their different shape characteristics, which provides a basis for identifying the authenticity of coins. For example, round money before the Han Dynasty was flat-backed, while ancient money from the Han Dynasty to the Ming Dynasty was mostly deep and shallow. However, the three baht in the Western Han Dynasty was flat-backed. The three products of the Northern Zhou Dynasty (Buquan, Yongtong Wanguo and Wuxing Tai Po), some money from Taihuo Liu Zhu, Ce Tian Fu Bao and Song Huizong, the money from the rulers, the big money from Dayuan Bao Tong (eight essays), Chongzhen and the Apocalypse, Xianfeng, etc., are generally deep on both sides. Five baht coins in the Six Dynasties were lighter than those in the Han Dynasty, with thinner characters and strokes, more irregular outlines and smaller money shapes. In the Yuan Dynasty, except for Bao's delicate money, other outlines were shallow, and money and meat were mixed. There are many wrong patterns on the back of the banknote, which causes the characters and outlines to tilt to one side, and the strokes on the back are complex and vague. Apocalypse (Xu), Tianding, God Blessing, Justice and Dragon and Phoenix are beautifully cast, but the money is not refined; Compared with the five, the sense of justice is slightly worse, so it is called the five-baht "Zhu" round of "delicate nature and excessive sense of justice". Higher than the word "gold", the outline is slightly wider, and the word "five" is paired into two isosceles triangles. Wang Mang, Song Huizong, Jin Zhangzong and the Northern Zhou Dynasty are the most exquisite ancient Chinese coins, and the first three are commonly known as "three unique". Wang Mang's words "One knife equals 5,000" and "One knife equals 5,000" are inlaid with gold, equal to money, not prominent and not depressed. Taihe Chongbao is a ten-printed regular script coin. Its money meat is smooth and delicate, without sand holes, with symmetrical inner and outer profiles, uniform thickness, deep characters, no adhesion between strokes, and no sundries at the corners between words, inner and outer profiles and money meat. Taihe clings to the inner and outer profiles without adhesion, and the characters and protruding parts of the inner and outer profiles are round. Liao Qian, Dali, Jianzhong, Huichang Kaiyuan, Tianfu Yuanbao, Taiping Baiqian and Qian Yuan (except Supreme) have the worst quality, and most of them are asymmetrical inside and outside, with copper flowing and sand holes everywhere. Moreover, Tianfu Yuanbao and Taiping Baiqian are different in size, light and simple. China is the thinnest ancient money, with Xiao Jian, Yong Guang and Jinghe in the Six Dynasties as the most important, commonly known as "floating in water", with a diameter of 1.5 ~ 1.7 cm. Money is small and big, and Qian Wen's strokes are small. Liang Zao Xinquan's handwriting is thin and straight, and there are often copper coins flowing between strokes, which Qian Wen doesn't know. Long Yun Bao Tong has two versions: large sample and small sample. The characters are slightly fat and thin, and large samples are rare. There is a broken foot point at the lower part of the word "Wu" in the sample, just like anti-counterfeiting memorization. ……

Appraised by coin experts, there have been some coins that do not actually exist in China, and some of them have been put on the map. Here are a few examples: iron coins and lead coins with characters on the back of the mansion, three-character knives, seven-nine-son knives, steamed stuffed buns and cloth, five phoenixes in the Han Dynasty, Dazuhe in the Tang Dynasty, and Fenghuang Lihe in the Five Dynasties. These coins are all forged.

Other methods to distinguish authenticity

In addition to using the above main methods to distinguish authenticity, you can also smell its gas, lick its taste, listen to its voice, weigh it and so on. These methods are generally limited to ancient copper coins, and some are difficult to judge accurately. Here is also a brief introduction.

(1) smell it with your nose. This method is only effective for odorous paint. For example, the fake rust made of the coating with rosin as adhesive can smell the pine fragrance. Some tasteless fake rust can't be smelled directly. Only by burning the fake rust can we smell the smell. As mentioned earlier.

(2) lick its taste with your tongue. This method can only lick out some fake rust with peculiar smell. If counterfeit money soaked in brine solution is salty. Moreover, both true rust and false rust are slightly toxic, and it is not hygienic to lick them with your tongue, so it is not suitable for use.

(3) Listen to its voice.

Throw money on the bed board, glass plate and hard floor, smell its sound, and identify its material and sound transmission performance. This method is often inaccurate: the size of coins is different, the degree of corrosion is different, and the money body is damaged or not. , all affect the sound transmission performance of coins, it is difficult to judge accurately, and it will damage the appearance of coins. It has been mentioned in the previous "material, metal primary color, sound discrimination" and should not be used.

(4) weigh it.

The composition of ancient coins is inaccurate, the shape and size are different, the degree of corrosion and wear is different, and the weight of coins of the same variety and specification is also different. Even if there is a weight difference compared with real money, it may be different money that has never been seen before, and it is difficult to determine whether it is fake money. Therefore, it is difficult to judge the authenticity of ancient copper coins and accurately measure their weight differences.