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2 Shu 'Kōshū Nishukin'
| Issuer | Tokugawa Shogunate |
|---|---|
| Year | 1650 |
| Type | Standard circulation coin |
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| Composition | Log in to see details |
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|---|---|
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| Reverse description | Plain hammered gold field without a beaded border, showing a characteristically rough and striated surface resulting from the hand-hammering technique. Two stamps are applied vertically in the center of the field: in the upper position, a circular seal enclosing a stylized character, and below it a rectangular seal stamp bearing an additional character, both serving as assayer or mint authentication marks. The absence of a border and the raw texture of the flan are hallmarks of this provincial gold issue produced under Tokugawa Shogunate authority. |
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| Mint | Kōshū Mint |
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| Additional information |
The Kōshū Nishukin takes its name from Kai Province — historically rendered as Kōshū — where gold mining had been a cornerstone of Takeda clan wealth before Tokugawa Ieyasu absorbed the region following Nagashino. These small gold pieces were produced using gold stocks and minting infrastructure inherited directly from that earlier tradition, making them administratively as much a consolidation of conquered resources as a monetary instrument.
Production is generally attributed to the mid-seventeenth century under the Edo system of licensed gold refiners, the za. The extremely small flan left almost no margin for die error.