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1 Cash - Qianlong Tongbao; Boo-su; privately cast
| Issuer | Qing Dynasty Imperial Mint (Suzhou) |
|---|---|
| Year | |
| Type | Log in to see details |
| Value | Log in to see details |
| 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 | Round with a square hole |
| 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 |
| Reference(s) | Log in to see details |
| 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 | Log in to see details |
| Edge | Plain |
| Mint | Log in to see details |
| Mintage | Log in to see details |
| Additional information |
Privately cast cash coins from the Suzhou region exist in a gray zone of Qing monetary history. The imperial Board of Revenue and Board of Works mints held casting monopolies in theory, but provincial and private furnaces operated openly during slack periods when official output failed to meet local demand. Suzhou's commercial economy — one of the busiest textile and silk trading networks in eighteenth-century China — generated coin demand that Boo-su's official output routinely couldn't satisfy.
Private castings are typically identified by irregular calligraphy, inconsistent flan preparation, and brass alloy ratios that diverge from the officially mandated 60/40 copper-zinc formula.