This coin is a Chongning Tongbao with a nominal value of dang shi, cast during the Chongning reign of Emperor Huizong of the Northern Song, specifically between the third and fifth years of Chongning (AD 1104–1106). The term dang shi denotes a theoretical exchange value equivalent to ten standard small cash coins.
Both obverse and reverse are furnished with an outer rim and an inner border. The obverse bears the inscription Chongning Tongbao in regular script, read from the top character and proceeding clockwise to the right. The calligraphy of the inscription is traditionally attributed to the imperial hand of Emperor Huizong of Song; it is also said that some inscriptions were written by Cai Jing, though such attributions cannot be conclusively verified. The character Chong is comparatively broad, a form referred to as “broad Chong” (kuo Chong), while the character Tong leans slightly to the left, known as “inclined Tong” (fu Tong). All four characters are relatively large in size: Chong connects to and pierces the outer rim, and Ning similarly connects to and pierces the rim. The reverse is plain and uninscribed.
From the Xining and Yuanfeng periods of the Northern Song (AD 1068–1085) onward, mineral output gradually declined. Although the exemption-from-labour tax was abolished and restrictions were imposed on the export of coinage, prices nevertheless continued to rise slowly. Central government finances were frequently strained. Consequently, Cai Jing, a disciple of Wang Anshi and a leading figure of the New Policies faction, was appointed grand councillor. The reign title was changed to Chongning, meaning “revering Xining,” and the New Policies were reinstated in an effort to extract revenue for the state. Cai Jing promoted the casting of dang shiChongning Tongbao and Chongning Zhongbao coins, later relying on them almost exclusively in order to achieve fiscal consolidation. However, when weight and copper content are taken into account, the intrinsic value of dang shi coins may not have equalled even three standard small cash coins of the Tianxi period. As a result, market disturbances were continuous and illicit casting became widespread. The authorities subsequently reduced the valuation of dang shi coins to dang wu, then further to dang san, before ultimately abandoning them altogether.
Emperor Huizong of Song (born AD 1082, died AD 1135), personal name Zhao Ji, was the eighth emperor of the Northern Song, reigning from AD 1100 to 1126. He excelled in calligraphy and painting, created the distinctive Slender Gold script, and ardently promoted the arts, Daoism, philosophy, and ritual, elevating court art of the Song dynasty to its zenith. Politically, however, he was inept: he placed trust in corrupt officials, indulged in extravagant expenditure, and gravely misjudged the strategic situation vis-à-vis the Jin and Liao states, leading to the Jingkang Incident. In AD 1127, during this catastrophe, he was captured and taken north, marking the fall of the Northern Song. He later died in Wuguocheng under Jin captivity. Despite his outstanding artistic achievements, Huizong has ultimately been regarded as a ruler who brought disaster upon the state, and historical assessments of his reign remain sharply divided.