In the fourth year of Wude (621 AD), Emperor Gaozu of the Tang Dynasty, in order to rectify the chaotic currency system, he abolished Sui money and imitated the five baht of the Western Han Dynasty. In view of the serious consequences of the chaos of the currency system and the Wu-Chu rebellion caused by the out-of-control coinage, the Han Dynasty During his reign, Emperor Wu carried out six currency reforms, which finally solved the currency problem that had been unresolved since the early Han Dynasty. In the first year of the founding of Emperor Wu of the Han Dynasty (140 BC), three baht coins were issued, which were as important as the text. More >> strict standards, the "Kaiyuan Tongbao" was cast to replace the five baht remaining in society. The original "Kaiyuan Tongbao" was inscribed by the calligrapher Ouyang Xun. The shape still followed the Qin square hole round coin. It was stipulated that every ten coins weighed one tael, and the weight of each coin was called one coin, while a thousand coins weighed six pounds and four taels. Due to the large number of Kaiyuan Tongbao unearthed, the market price is relatively low. Ordinary Kaiyuan Tongbao costs 1 yuan each; mid-term Kaiyuan Tongbao costs about 10 yuan each. The more expensive early silver Kaiyuan can cost thousands of dollars. There are also late Huichang Kaiyuan Tongbao, the market price is slightly higher, about 100 yuan each. Therefore, ordinary Kaiyuan collectors do not need to collect a large number of pieces. It is enough to save one or two pieces for viewing. Attention should be paid to the identification of Huichang Kaiyuan. Historical data records that there are about 24 types of Kaiyuan in Huichang. The money furnaces from various states stamped the word "Chang" on the back of the money, which is not consistent with the original text, and the stamp is very random and irregular. If the writing is found to be beautiful and standardized, or if there is "Yang" in the back text, it will be deemed as pseudo-ancient. You can store the coins in a box or bag, with the money inscription facing down or inside to prevent wear and tear.
Kaiyuan Tongbao was first minted in the fourth year of Wude in the Tang Dynasty (AD 621). Every ten coins weighed one tael, and it was also read as Kaiyuan Tongbao (not Kaiyuan Tongbao). The back of the money has stars, moons and other patterns. , the version is complex. After the Tang Dynasty, there was still smelting and casting, but the shape was different from that of the Tang Dynasty. In the Tang Dynasty, a small amount of "Kaiyuan Tongbao" coins were cast to commemorate the founding of the furnace, and they were also forged by later generations. In addition, there are also very few gold, silver and lead Kaiyuan Tongbao cast, which is very rare.
The casting and circulation of Kaiyuan Tongbao in the Tang Dynasty had epoch-making significance in the history of the development of coin forms in our country. Kaiyuan Tongbao is referred to as Kaiyuan Qian or Tongbao Qian. Kaiyuan means "founding of the country"; Tongbao means "circulation of treasures". The name of the copper coin is Tongbao, which reflects that people at that time had a better understanding of the role of money. Using money as a treasure means the strengthening of the concept of money as treasure and the degree of people's worship of it.