The top ten money of Tongbaodang in the Song Dynasty was minted after July of the first year of Baoqing in the Southern Song Dynasty (1225). At that time, "Dasong Yuanbao" coins were used, while "Dasong Bao Tong" only had small iron coins. The bronze man only saw a kind of big money when he picked it up. Very little finishing. "Dangshi" is one inch and six minutes (5.2 cm) in diameter and weighs 30 to 35 grams. Qian Wen's regular script is straight-reading, and his calligraphy is very beautiful, which is characterized by connecting words from the beginning. According to the cloud, it was written by Cai Jing, a great calligrapher in the Song Dynasty. According to Qian Wen's shape, it can be divided into two types: thin books with small characters and thick strokes with large characters, of which thin books are the best. When you collect a lot of money and invest it in Xichuan, it's like a prison in Jiading. There's no way to know how much you voted. Become a rare coin treasure in the world.