 The sprue of this specimen is 17 millimeters and is located at the bottom of the coin, meaning that it must have been one of the two cash coins located at the top of the casting mould.Another reason why this silver Ban Liang is likely to have been cast by the State of Qin is because both its shape and its appearance are consistent with the Ban Liang cash coins from the time period, for example its centre hole is shaped like a rectangle as opposed to square as was the rule during the Han period, and the top and bottom horizontal lines of this specimen have bent corners also typical for Qin Ban Liang.Some Ban Liang cash coins have been discovered that have drilled holes, some of these cash coins have only one additional holes drilled into them while others have two.