The casting and distribution of Jianyan Bao Tong, Jianyan Chongbao and Jianyan Yuanbao began in the first year of Jianyan (1 127), which completely conformed to the pattern of Zhao Naizu's coin casting in the Northern Song Dynasty. Take Jianyan Bao Tong as an example. There are three kinds of copper and iron coins: Xiaoping, 20% and 30%, Qian Wen seal and Kai.
Jianyan Bao Tong is the most representative coin in all versions, and there are many versions, such as seal script, big and small characters, point-built version and provincial treasure version. The number of other Xiaoping and San Qian is relatively small. It can also be seen that the circulation structure of coins at that time was mainly folded in half. Jianyan Chongbao and Jianyan Yuanbao are relatively rare, especially Jianyan Yuanbao, which is very rare and expensive.
2. Jingkang Bao Tong
Jingkang Bao Tong is one of the ancient Chinese coins. It was cast in the Song Qinzong period of the Northern Song Dynasty and belongs to the national first-class cultural relics. Jingkang Bao Tong coins are copper, iron and silver. Jingkang Bao Tong, with a diameter of 31.5mm, weighs 7g. Due to the demise of the Northern Song Dynasty, the circulation of coins minted during the Jingkang period was very small, which was extremely rare from handed down and unearthed. Jingkang Bao Tong is a rare currency that collectors are looking for.
Extended data
The changes of currency writing in Song Dynasty can be summarized into six kinds.
1, the change of the treasure of the Song Dynasty. Take Jiading Iron Sign in Southern Song Dynasty as an example. There are gold ingots and heavy treasures, as well as treasures such as wisdom, wisdom, prosperity, faith, security, integrity, integrity, rush, ten thousand, red and treasure.
2. The difference between the opposite reading and the rotating reading of Song coins. Reverse reading means reading up, down, left and right, and rotating reading means reading up, down, left and right. For example, Li Qingqian was the beginning of the Song Dynasty, and in the Southern Song Dynasty, he formed a monetary system based on the conversion of two currencies, which set a precedent for copper and iron.
3. Changes in the style of coins in Song Dynasty. There are also changes in calligraphy styles, such as Li, Xing, Cao, Kai (including imperial calligraphy, money-saving, grand view, and worship of Ning) and seal (including nine-fold seal and Song). In the Southern Song Dynasty, Qian Wen's calligraphy began to be based on regular script. In the Yuan, Ming and Qing Dynasties, regular script was mostly used by Qian Wen.
4. Changes of characters and patterns on the back of coins in Song Dynasty. It refers to the discipline inspection, discipline, discipline year, change of discipline value, etc. For example, Shao Xi Yuanbao supports Ji Jian and commemorates the Millennium. The currencies arranged in chronological order began in the seventh year of Xichun in the Southern Song Dynasty, and remained unchanged throughout the Southern Song Dynasty.
5. Changes in the style of coins in Song Dynasty. For example, the overall style of Qian Wen's four characters is vigorous, tolerant, big and small, while the style of single-character calligraphy is long-term, short-term and narrow-term. And the local characteristics of single words are abbreviation and universal structure.
6. The position change of Song coins. For example, the four-character position is rotation, the three-character position is three-profile, and the single-character position is the change of ascending, descending, advancing, retreating, leaning back and leaning down.
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