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| 表面の銘文 | REPUBLICA PORTUGUESA 1987 ✠✠100 ESC.✠ 22 13 6 |
| 裏面の説明 | The reverse depicts a navigational compass superimposed at the center of a stylized sailing vessel, with a cartographic representation of the Strait of Gibraltar and the African continent to the right, commemorating Diogo Cão's explorations. The legend '1486 DIOGO CÃO' appears along the upper portion of the field, referencing the year of his voyage. The engraver's signature 'DEÇA' and the mint mark 'incm' are inscribed in the lower field. The composition evokes the Age of Discovery aesthetic characteristic of the Portuguese commemorative series. |
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| 追加情報 |
Diogo Cão was the Portuguese navigator who erected the first stone padrões — inscribed limestone pillars claiming territory for the Portuguese crown — along the West African coast in the 1480s, reaching the Congo River in 1482 and pushing as far south as Cape Cross in present-day Namibia. His voyages systematically extended the southern limit of European geographic knowledge by hundreds of miles in a single decade.
This silver issue is the .925 fineness variant of a bimetallic commemorative series; the base-metal circulation version shares the same design but was struck for everyday use. The Gomes R77.02 designation places it within the collector-oriented run rather than the broader mintage.