Two large Chinese characters Wu Zhu, no inside rims, four dashes radiating from the corners of the hole, outside rim / Blank, inside and outside rims. 23.5mm, 2.51 grams. Issued ca.115-113 BC. Hartill #-.; Gratzer/Fishman "One Thousand Years of Wu Zhu Coinage" #B1.39.

With the outside filed down during an inflationary period (probably in the late Western Han period or during the turbulent reign of Wang Mang).

The Han Dynasty (206 BC - 220 CE) was the second imperial dynasty of China, preceded by the Qin Dynasty (221-206 BCE) and succeeded by the Three Kingdoms (220-265 CE). It was founded by the peasant rebel leader Liu Bang, known posthumously as Emperor Gaozu of Han. It was briefly interrupted by the Xin Dynasty (9-23 CE) of the former regent Wang Mang. This interregnum separates the Han into two periods: the Western Han (206 BCE9 CE) and Eastern Han (25-220 CE). Spanning over four centuries, the period of the Han Dynasty is considered a golden age in Chinese history.