10 Cash - Xianfeng Zhongbao, Boo-gi, small type

The Board of Revenue Mint in Beijing was one of the first imperial mints to strike the Xianfeng cash series beginning in 1851, tasked with funding a treasury increasingly hollowed out by the Taiping Rebellion. By 1854, the financial strain had become acute enough that the court authorized inflated-denomination cash — nominally worth 10 but containing far less metal than the face value implied. The small-type designation here is not incidental: it reflects a documented mid-run reduction in flan size as the mint cut costs under explicit bureaucratic pressure.

Boo-gi identifies this as the Manchu designation for the Board of Revenue, distinguishing it from the contemporaneous Board of Works issues.