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| 正面描述 | Against a field decorated with a radiating star pattern, a central circle bears the Portuguese coat of arms. Surrounding the arms, a circular legend reads 'PORTUGAL' at the top and 'O RENASCIMENTO' (The Renaissance) below, with the face value '5€' and the year of issue '2019' also present. The mint name 'INCM' and the engraver's name 'E. BYRNE' appear at the lower left. The overall design combines heraldic and decorative Renaissance-inspired elements in a refined, medallic composition. |
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| 正面文字 | 登录 以查看详情 |
| 正面铭文 | 登录 以查看详情 |
| 背面描述 | The reverse, designed by sculptor Eloísa Byrne, features an artistic representation of the loxodromic curve — a mathematical concept discovered by the Portuguese mathematician Pedro Nunes (Petrus Nonius) in 1537 that profoundly influenced navigation and cartographic science. The elegant geometric motif fills the field, rendered in a stylized manner evoking both mathematical precision and artistic refinement. The legend 'CURVA LOXODRÓMICA' appears alongside the attribution 'PETRUS NONIUS', identifying the subject and its discoverer. |
| 背面文字 | 登录 以查看详情 |
| 背面铭文 | 登录 以查看详情 |
| 边缘 | 登录 以查看详情 |
| 铸币厂 | 登录 以查看详情 |
| 铸造量 | 2019 INCM - Proof - 1,974 |
| 附加信息 | 登录 以查看详情 |