The casting volume is very small and the circulation is narrow and the three-hole cloth of the late Warring States period is circulated

The Tang Dynasty West City Museum has a precious three-hole cloth from the late Warring States period, 7.4 cm long and 3.5 cm wide, which is very rarely minted and has a narrow circulation area, so it is difficult to find and extremely rare.

Sankong cloth was the currency circulating in the late Warring States period in the Zhao and former Zhongshan kingdoms (i.e., in present-day Hebei Province and parts of the surrounding areas, and Handan was the capital of the Zhao state). The coin system is special, for the round head, round shoulders, round crotch, round foot, and has a clear outer outline, the head and both feet have a round contour perforation, so the name of the three hole cloth, is China's earliest coin with a weight or value inscription (baht or two), which has a great influence on later generations. The coin is divided into two grades according to the size of the back text, the shape and ornamentation are the same, all of which are molded place names on the front, and the back abdomen is molded with jizhong and ji value characters, the large one is "two" on the back, and the small one is "twelve Zhu". Zhu, Baht also. The Sun Tzu Sutra says: "The origin of the name begins with the yellow, the ten tired are one tired, the ten tired are one baht, and the twenty-four baht is one or two." "Twelve Zhu is half two. There are more than 20 kinds of face text, most of which are place names of the Zhao Kingdom after examination.

Due to the very few excavations of the three-hole cloth and the limitations of the historical record, the research and research of the three-hole cloth by predecessors has not made great progress. After liberation, especially in recent years, with the sporadic excavation and discovery of the three-hole cloth, many experts and scholars have begun to conduct more in-depth research on the three-hole cloth, but there are still many opinions, and there is no consensus, and gradually formed the three theories, namely the three-hole cloth Qinguo theory, the Zhao Guo theory, and the Zhongshan Guo theory. According to the examination of the three-hole cloth text, the author is more inclined to Zhao Guo's theory, but what is right and wrong is still inconclusive, and further research and research are yet to be carried out.

Three-hole cloth has been valued by the Quan family more than two hundred years ago, in the Jiaqing period of the Jinshi master Chu Shangling's "Ji Jin Seeing Record" has been published, but has been found in the physical object is not much, in the past the Quan family to get the three hole cloth if they obtained the most precious treasure, extremely cherished, most of them are secret, at the same time, the three kong cloth with the "baht two" era value, the qin Han and later "baht two" coins first, so it is respected by the quan family of all generations, listed as one of the fifty treasures of the ancient spring.