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| Issuer | Joseon (1392-1897) |
|---|---|
| Year | 1742-1752 |
| Type | Standard circulation coin |
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| Composition | Log in to see details |
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| Diameter | Log in to see details |
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| Obverse description | Log in to see details |
|---|---|
| Obverse script | Chinese |
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| Mintage | ND (1742-1752) 戸 |
| Additional information |
The "Heaven" series mun coinage was issued under a rotational casting system administered by the Five Military Commands in Seoul, with individual bureaus assigned celestial, terrestrial, and directional designations to track production accountability. The single-dot "small type" variant reflects an output reduction order issued in the 1740s as copper supply from domestic mines — already strained — failed to keep pace with demand driven by expanding market activity in the capital.
Cast rather than struck, these pieces show the characteristic sprue marks of sand-mold production. The Oseong reference 18.149 places this squarely among the tighter, lighter issues that preceded the broader monetary reforms of the 1750s.