Catalog
1 Mon 'Keichōtsūhō' - Keichō
| Issuer | Japan |
|---|---|
| Year | 1606 |
| 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 |
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| Engraver(s) | Log in to see details |
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| Obverse description | Log in to see details |
|---|---|
| Obverse script | Chinese |
| Obverse lettering | Log in to see details |
| Reverse description | Plain, featureless field surrounding a central raised square boss enclosing the square hole, with a flat inner rim and a plain raised outer rim. The reverse bears no inscriptions, symbols, or decorative elements, consistent with standard Japanese cast cash coinage of the early Edo period. |
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| Edge | Log in to see details |
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| Additional information |
The Keichō Tsūhō was among the first coins issued under Tokugawa authority following the consolidation of power after Sekigahara in 1600, part of a deliberate effort to standardize a monetary system that had long relied on imported Chinese cash coins — particularly Ming-era Eiraku Tsūhō — circulating alongside a chaotic assortment of private and domain issues. Production was authorized in 1606 under the second shogun Tokugawa Hidetada, with casting carried out at multiple furnaces across Japan, which accounts for the considerable variation in fabric and flan quality seen across the DHJ subtype range.