Ichibuban
The Ichibuban (一分判) (lit: "one gold bu") was a monetary unit of Japan. The Ichibuban was a gold coin that was worth a quarter of a Koban. The gold Ichibuban of 1714 (佐渡一分判金) had a weight of 4.5 g, with 85.6% of gold and 14.2% of silver.
Ichibuban

As6673 · CC BY-SA 3.0
- Field
- gold coin
- Region
- Tokugawa shogunate
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wikidata · Q2090145 · wikipedia · Ichibuban
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Gold Ichibuban (一分判金)
Gold Ichibuban (一分判金)
The silver Ichibuban from 1837 to 1854 (Tenpō Ichibugin, 天保一分銀, "Old Ichibuban") weighed 8.66 g, with an alloy of 0.21% gold and 98.86% silver. The Nibuban (二分判) was worth double the Ichibuban, and half a Koban and was also a rectangular coin.
• Illustration — Keichō Ichibuban • Illustration — Kyōhō Ichibuban • Illustration — Genbun Ichibuban • Illustration — Bunsei Ichibuban • Illustration — Tenpō Ichibuban

Counterfeit 2buban
As6022014
Chronology
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Chronology
The full dated record · 2 entries
1601
Ichibuban first recorded.
1601
Ichibuban began in 1601.
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The biographical narrative on this page is based on the Wikipedia article Ichibuban, revision 1332761882 (EN edition), by its contributors. VALÉORINE has edited that text and built its own documentary record around it. The reused material is available under CC BY-SA 4.0, and this page's reuse of it is offered under the same licence. Everything else on this page — the chronology, the holdings, the evidence, the plates and the connections — is VALÉORINE's own record. Sources and licences.
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1- gold coinTerminology
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The Encyclopedia exists whether or not anything is for sale. Corrections are recorded rather than overwritten, and every version of this record is kept. Published 14 August 2026.
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