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1 Mun Kum, Circle at left

Issuer Joseon (1392-1897)
Year 1742
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Value 1 Mun (0.001)
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Obverse description Cast bronze cash-type coin featuring four Chinese characters arranged around a central square hole in the classic cross-pattern. Reading top-to-bottom and right-to-left, the inscription reads 常平通寶 (Sangpyeong Tongbo), identifying this as currency issued under the Sangpyeong (Ever-Normal) system of the Korean Joseon Dynasty. The characters are rendered in regular script (kaishu) with clearly defined strokes. The field is plain, with no additional decorative elements.
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Edge Plain
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Additional information

The "circle at left" designation identifies a furnace mark used by one of the many government bureaus authorized to strike cash coins during the Yeongjo reign. Korea's mun coinage was produced across a fragmented network of minting offices — military commands, royal guards units, civil ministries — each assigned distinct symbols to differentiate output. This organizational sprawl was a deliberate fiscal response to chronic copper shortages and the state's inability to centralize production.

KM#343 is among the more numerous varieties from this period, though attribution between furnace marks remains contested in older references.

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