Qianlong Tongbao is a copper coin minted during the reign of Emperor Qianlong of the Qing Dynasty (1736-1795). The Manchu script on the back is quite complex. You can refer to Huaguangpu's "Catalogue of Ancient Chinese Coins", which provides detailed prices and coin rubbings. The production bureaus of Qianlong Tongbao include 20 bureaus such as Baoquan, Baoyuan, Baozhi, and Baozhe, with materials including brass, bronze, and red copper. The Qianlong Tongbao coin is written in Manchu as "Qianlong Tongbao", with a value of "one", meaning auspicious. This coin has a small face value, a small circulation range, fine and even strokes, and smooth writing.

Zhidao Yuanbao "is a currency minted by Emperor Taizong of Song, Zhao Guangyi, in the first year of Zhidao (995 AD). The diameter of this coin is about 2.5 centimeters and its weight is about 3.8 grams. Qian Wen has three types of writing styles: regular script, running script, and cursive script. It is said to have been handwritten by Emperor Taizong of Song, Zhao Guangyi, and is known as the "Imperial Script". Zhidao Yuanbao held an important position in the ancient currency system. As a currency of the Song Dynasty, Zhidao Yuanbao played an important role in circulation. At the same time, the casting and circulation of Zhidao Yuanbao also reflected the economic prosperity and social stability of the Song Dynasty.

Xuanhe Tongbao "is a year name coin minted by Emperor Huizong of Song, Zhao Ji, during the Xuanhe period (1119-1125 AD). Xuanhe Tongbao is a combination of seal script and clerical script for coins, with direct reading. The currency values include Xiaoping, Fen Er, Fen San, and Fen Wu, with differences in coin diameter. Xiaoping generally has a diameter of about 2.4 centimeters, Fen Er is about 2.7 centimeters, Fen San is about 2.9 to 3 centimeters, and Fen Wu has a diameter of about 3.2 centimeters. Emperor Huizong of Song personally inscribed the inscriptions "Chongning Tongbao", "Daguan Tongbao", and "Xuanhe Tongbao" with his unique "thin gold body". The fonts were dignified and beautiful, and the strokes were straight and handsome, earning him the nickname "iron strokes and silver hooks".

Kaiyuan Tongbao "is a currency minted on August 2, 621 AD, in the fourth year of Emperor Gaozu of Tang Dynasty's Wude reign. This is the longest and most important circulating currency of the Tang Dynasty. The top, bottom, right, and left characters on the coin face are read as' Kaiyuan Tongbao ', while the top, right, bottom, and left characters are read as' Kaiyuan Yuanbao'. Although "Kaiyuan" was a reign title of Emperor Xuanzong of Tang, "Kaiyuan Tongbao" was not a reign title coin, nor was it a currency that only began to be used during the reign of Emperor Xuanzong of Tang. The main reason why Tang Gaozu's reign title was named "Kaiyuan Tongbao" instead of "Wude Tongbao" was that there was no market for reign title coins at that time.

Daguan Tongbao "is a year name coin minted by Emperor Huizong Zhao Ji of the Northern Song Dynasty during the Daguan period (1107-1110 AD). It has various formats such as Xiaoping, Fold 2, Fold 3, Fold 10, etc. The currency of the Northern Song Dynasty, Daguan Tongbao, was inscribed with inscriptions by Emperor Huizong. The Song Dynasty was different from previous dynasties in that new coins were minted with each new year name. If the year name was the same as the Baowen, non year name coins were minted even more. In the third hundred years of the Song Dynasty, the main currency used was the small flat folded two coins, during which there were also large coins circulating and the outline and size of the coins had certain standards. Rare throughout history, in addition to the authentic, cursive, clerical, and seal scripts, Qian Wen also features the thin gold body of Emperor Huizong of the Northern Song Dynasty, known as the "Jade Carving Silver Hook".