1 Jin (Chang Yuan - State of Liang)

The Chang Yuan one-jin coin represents a pivotal transition in Chinese numismatics during the Warring States period, originating from the State of Liang. Cast around 350 BCE, these spade-shaped coins were a departure from earlier, more abstract barter tokens, reflecting the state's move toward a standardized currency system. The coin features distinct calligraphic inscriptions that were meant to denote its weight and value, serving as a functional tool for a growing merchant class rather than a ritual object.

The design of these spade coins, known as 'Bu,' was rooted in the shape of ancient agricultural tools, specifically the shovel, which held significant cultural and economic weight in agrarian society. The calligraphy is characteristic of the script used in the State of Liang, known for its elegant, elongated strokes. While the aesthetic was influenced by the utilitarian form of the tool it mimicked, the refinement of the characters suggests a sophisticated administrative push toward economic centralization before the eventual unification under the Qin dynasty.