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| 表面の説明 | Rectangular cast flan with a central square hole, surrounded by four Chinese characters arranged in two columns reading 銅山至寶 (Dōzanshihō, meaning 'Copper Mine Universal Treasure'). The characters are rendered in relief within a recessed rectangular field bordered by a raised frame. The script is executed in a bold, archaic brush-style typical of Japanese domain coinage of the late Edo period. The overall surface exhibits the rough, uneven texture characteristic of cast copper-clad lead pieces. |
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| 表面の文字体系 | ログイン して詳細を見る |
| 表面の銘文 | ログイン して詳細を見る |
| 裏面の説明 | Rectangular cast reverse featuring a central round hole flanked by Chinese characters arranged in a vertical layout, reading 當二百久 in abbreviated form, denoting the denomination of 100 mon and the second year of the Bunkyū era. The inscription is cast in relief within a recessed field enclosed by a raised rectangular border. The characters are rendered in a bold, archaic style consistent with the obverse. Surface texture is coarse and irregular, typical of domain-issued cast coinage of the late Edo period. |
| 裏面の文字体系 | ログイン して詳細を見る |
| 裏面の銘文 | ログイン して詳細を見る |
| 縁 | ログイン して詳細を見る |
| 鋳造所 | ログイン して詳細を見る |
| 鋳造数 | ログイン して詳細を見る |
| 追加情報 |
Kubota Domain, in present-day Akita Prefecture, issued this piece under financial duress in the mid-1860s as the Tokugawa fiscal system buckled under the costs of coastal defense and internal unrest. The copper-clad lead construction was an open acknowledgment that the domain lacked the metal reserves to produce a sound coin — a fact that did not go unnoticed by merchants who discounted such issues in daily trade.
The Dōzanshihō designation refers specifically to the copper-mountain mint authority, linking issuance to Kubota's copper-mining interests in the region. Within two years of this issue, the Meiji Restoration abolished domain coinage entirely.