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| 正面描述 | 登录 以查看详情 |
|---|---|
| 正面文字 | 登录 以查看详情 |
| 正面铭文 | MARIA.I.D.G.P.ET.BRASILIÆ.REGINA Shield on X 1790 |
| 背面描述 | Central device depicts an armillary sphere rendered with latitude and longitude bands, a prominent equatorial ring, and radiating meridians, symbolising Portugal's maritime dominion and global reach. The sphere rests on a plain field and is framed by a circular Latin legend running the full circumference between two beaded borders. The design is characteristic of late eighteenth-century Portuguese colonial copper coinage. |
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| 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 | 登录 以查看详情 |
| 附加信息 |
In 1809, the Portuguese crown — then operating from Rio de Janeiro following the Napoleonic invasion of the Iberian Peninsula — faced an acute shortage of small copper currency in Brazil. Rather than strike entirely new coinage, existing X Réis pieces of Maria I were countermarked to raise their face value to 20 Réis, doubling the denomination at a stroke. It was an expedient solution to a circulation crisis in a colony that had just become, effectively, the seat of empire.
The countermark itself is notoriously inconsistently applied, and genuine pieces vary considerably in strike depth.