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| 表面の説明 | Cast copper-alloy coin of round form with a central square perforation framed by a raised square boss. Two large kanji characters in bold raised relief are disposed vertically about the central aperture: 永 (ei, 'perpetual') above and 十 (jū, 'ten') below, both executed in a formal, legible script characteristic of Edo-period cast coinage. The broad flat field between the inner boss and the well-defined outer rim is entirely plain and unadorned. The raised outer rim is crisp and evenly cast, consistent with official Japanese monetary production practice of the early eighteenth century. |
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| 表面の文字体系 | Chinese (Kanji) |
| 表面の銘文 | ログイン して詳細を見る |
| 裏面の説明 | Cast copper-alloy reverse of identical round format with a central square perforation surrounded by a recessed inner field. Two small circular cartouches are placed symmetrically on the broad outer rim, one at the top enclosing the character 永 (ei) and one at the bottom enclosing 大 (dai/ō, 'great'), both rendered in miniature raised relief. The inner field between the raised square boss surrounding the aperture and the rim is otherwise entirely plain and smooth. The overall casting quality is fine, with well-defined rim edges and legible cartouche inscriptions, reflecting the experimental pattern nature of this issue. |
| 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 | ログイン して詳細を見る |