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| 正面描述 | 登录 以查看详情 |
|---|---|
| 正面文字 | Latin (uncial) |
| 正面铭文 | 登录 以查看详情 |
| 背面描述 | Cross composed of five Portuguese royal escutcheons (quinas), each charged with five bezants in saltire, arranged in the traditional quinary pattern associated with the arms of Portugal. The shields are disposed one at the top, one at each side, one at the center, and one at the base of the cross, all set within a beaded inner circle. The surrounding circular legend reads 'ADIVTORIVM NOS' in uncial Latin script, an invocation derived from Psalm 123, meaning 'Our help.' The hammered flan exhibits characteristic irregular contour and surface texture typical of early fifteenth-century Portuguese billon coinage. |
| 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 | 登录 以查看详情 |
| 附加信息 |
João I's reign coincided with the opening of Portugal's seaborne expansion, and the Ceuta campaign of 1415 demanded enormous logistical expenditure that strained the royal treasury. Billon fractional issues like this one were the workhorse of domestic petty commerce while silver was being redirected toward military and mercantile priorities.
The Lisboa mint under João I operated under periodic royal ordinances regulating billon fineness — a persistent problem, as debasement complaints from this period are well documented in contemporary chancery records.