Five emperors' money Which rope should I use, the red rope or the yellow rope?

Because of the long time span, there are usually multiple versions, so there are also different versions of Wudi Money, which often leads to different values of "Tong" Wudi Money. Take Qin Banliang Qian, Han Wuzhu and Tang Kaiyuan Bao Tong as examples.

Kaiyuan Bao Tong was the currency of the Tang Dynasty, which lasted until the Five Dynasties. The history of more than 300 years in Tang and Five Dynasties made Kaiyuan Bao Tong have different versions and styles. Kaiyuan Bao Tong can be divided into the following periods according to casting time: early Tang Kaiyuan, prosperous Tang Kaiyuan, middle Tang Kaiyuan, Huichang Kaiyuan, ordinary late Tang Kaiyuan, privately cast trail Kaiyuan, Five Dynasties and Ten Kingdoms Kaiyuan.

Authenticity appraisal

Because the coins in each historical period follow a certain evolution track. Therefore, the key to the authenticity identification of ancient coins is to see whether the charm temperament and production style of coins conform to the production characteristics of their times and regions.

The traditional methods of distinguishing authenticity mainly include:

1, see Qian Wen. According to the characteristics of the text version of copper coins, the authenticity can generally be preliminarily judged.

2. Look at the color. Copper coins are generally seriously corroded because of their age. Whether it is hard green rust or soil rust, it is rusted in the bones, and even the whole body is rusted, so it cannot be easily peeled off.

3. Listen to the sound. The voice of most copper coins is very clear. If the sound is dull, it means that there are dark cracks in the money, and some private coins with more impurities are dull.

4. smell it. The newly unearthed copper coins have an earthy smell, while the counterfeit coins have a pungent chemical smell.