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'Tenpō Mameitagin' Large 保
| Issuer | Japan |
|---|---|
| Year | 1837-1858 |
| Type | Standard circulation coin |
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| Composition | Log in to see details |
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| Obverse description | Log in to see details |
|---|---|
| Obverse script | Chinese (Kanji) |
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| Reverse description | The reverse presents the kanji character 保 (Hō), signifying the Tenpō era (1830–1844), struck in bold relief at the center of the flan within an incuse rectangular cartouche with rounded corners. The character is rendered in a deliberately stylized, compressed script consistent with the engraving conventions of Tokugawa-period bean silver coinage. The surrounding field is plain and slightly convex, reflecting the hand-hammered production method. The irregular, lumpy edge of the flan is characteristic of mameitagin produced at the Osaka and Edo silver mints during this period. |
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| Edge | Plain (irregular, hammered) |
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