Bao Tong belonged to that dynasty.

Bao Tong currency in the Tang Dynasty. Coins were inscribed by calligrapher Ou Yangxun in the early Tang Dynasty. The shape of coins still follows the round money of Qin dynasty, and it is stipulated that every ten articles weigh one or two, each article is called a money, and a thousand articles weigh six pounds and four ounces. From then on, China's monetary system officially broke away from the two systems of Thai baht in the name of weight, and developed into Bao Tong's monetary system, which became the standard of coinage after the Tang Dynasty and lasted for nearly 1300 years.

Wude Kaiyuan in Early Tang Dynasty

Kaiyuan Bao Tong

Qianzhuang is a high-quality Kaiyuan money written by Ou Yangxun, which is closely supervised by Qianjian. Its main features are: good front and back, complete outline, deep Qian Wen, pure copper and excellent casting.

The Moon Marks in the Mid-Tang Dynasty and Kaiyuan

It looks like fingernail prints, and there are quite a few unearthed. On the Kaiyuan Qian Wen, the moon mark changed Ou Yangxun's dignified and steady Kaiyuan Qian Wen into a slender and delicate pen. The prefix "Yuan" is horizontally elongated, and the first three strokes of the word "Tong" are continuous twists and turns, and then evolve into continuous twists and turns.

Kaiyuan in the Late Tang Dynasty

In the sixth year of Huichang (AD 846), the casting guild was located in Kaiyuan, with a diameter as large as Kaiyuan, and the names of countries were cast on the back, such as "Jing" and "Chang" in Yangzhou.

Xiaojing kaiyuan

Refers to Kaiyuan coins with a diameter of 265,438+0 mm to 23 mm These small Kaiyuan coins may have been privately cast by the people in various periods.