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1 Cash - Xianfeng Tongbao, Boo-yūn, with crescent
| Issuer | Board of Revenue Mint / Yunnan Provincial Mint |
|---|---|
| Year | 1854-1861 |
| Type | Log in to see details |
| Value | 1 Cash |
| Currency | Log in to see details |
| Composition | Log in to see details |
| Weight | Log in to see details |
| Diameter | Log in to see details |
| Thickness | Log in to see details |
| Shape | Log in to see details |
| Technique | Log in to see details |
| Orientation | Log in to see details |
| Engraver(s) | Log in to see details |
| In circulation to | Log in to see details |
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| Obverse description | Log in to see details |
|---|---|
| Obverse script | Chinese (traditional, regular script) |
| Obverse lettering | Log in to see details |
| Reverse description | Log in to see details |
| Reverse script | Log in to see details |
| Reverse lettering | ᠪᠣᠣ ᠶᡡᠨ (Translation: Boo-yūn) |
| Edge | Log in to see details |
| Mint | Log in to see details |
| Mintage | Log in to see details |
| Additional information |
The Xianfeng reign (1851–1861) was catastrophic for Qing minting. The Taiping Rebellion severed supply lines, debased coinage proliferated across provinces, and the Board of Revenue struggled to maintain any consistency in output. Yunnan's relative geographic isolation — and its proximity to copper sources in the southwest — meant the provincial mint continued striking when northern facilities had largely collapsed.
The crescent mark on this piece denotes a specific batch designation used at Boo-yūn. Its exact administrative significance remains incompletely documented.