Two Chinese characters - Ban Liang ("Half an ounce"), outer rim / Blank, no rims. 28mm, 5.08 grams. Hartill #7.5; Gratzer/Fishman "The Early Round Coins of China" #A11.49. SKU T1775-32107

Late Eastern Zhou period, ca.336-221 BC. This is a very rare type with an outer rim on obverse - most coins of this period did not have rims, and coins like this one are very rare. Rated rare to very rare in Gratzer/Fishman.

Qin (778 BC-207 BC) was a Chinese feudal state that existed during the Spring and Autumn and Warring States Periods of Chinese history. It emerged as one of the dominant superpowers of the Seven Warring States by the 3rd century BC and eventually united China under its rule in 221 BC, after which it is referred to as the Qin Dynasty.

This coin is unconditionally guaranteed to be authentic.