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Mameitagin 'Kyōhō Mameitagin' Uniface Daikoku
| Issuer | Japan |
|---|---|
| Year | 1714-1736 |
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| Composition | Log in to see details |
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| Diameter | Log in to see details |
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| In circulation to | 16 June 1738 |
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| Obverse description | Log in to see details |
|---|---|
| Obverse script | No legend |
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| Edge | Plain |
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| Additional information |
Kyōhō Mameitagin were produced following the Kyōhō monetary reform of 1714, itself a direct reversal of the disastrous Genroku-era debasements under Arai Hakuseki's influence. The shogunate under Tokugawa Yoshimune restored silver fineness to levels approximating pre-Genroku standards, a politically costly decision that triggered immediate price deflation and considerable merchant resentment in Osaka.
These irregular, hand-struck lumps were assayed and stamped by the Ginza, Japan's official silver mint authority. The Daikoku stamp indicates authorization by the Edo Ginza specifically. Each piece was individually weighed rather than struck to a fixed flan, which is why no two are dimensionally alike.