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| 表面の説明 | Central crowned baroque coat of arms of Portugal, featuring the distinctive quinas (five escutcheons) arrangement within an ornate cartouche, flanked by elaborate scrollwork and foliate mantling. The royal crown surmounts the shield at the top of the composition. The circular legend is divided around the crown, reading JOANNES DEI GRATIA in Latin characters. The overall design reflects the late baroque heraldic style typical of the Joannine period. |
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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 | ログイン して詳細を見る |
| 裏面の文字体系 | Latin |
| 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 |
João assumed the role of Prince Regent in 1799 when his mother, Maria I, was declared mentally unfit to rule. The 1812–1813 copper coinage was struck under extraordinary circumstances: the Portuguese court had fled to Brazil in 1807 ahead of Napoleonic forces, and the Lisbon mint was operating under a kingdom effectively governed from Rio de Janeiro. Metropolitan Portuguese coinage of this period is scarce precisely because wartime occupation disrupted normal minting cycles — French forces under Junot had only recently been expelled following the Convention of Sintra in 1808.