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| 正面描述 | Draped bust of King Carlos III facing right, with elaborately curled and ribboned hair. The portrait is rendered in a naturalistic baroque style, set within a beaded border. The encircling legend reads CAROLUS III · DEI · G · · 1770 · with the date appearing in the lower field below the truncation. The effigy displays fine engraving detail typical of Spanish colonial trial coinage of the period. |
|---|---|
| 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 | Plain, unworked reverse field, consistent with the nature of this piece as an obverse trial strike. The surface shows no design elements, legends, or devices, confirming that only the obverse die was applied during the striking process. The metal exhibits natural oxidation and surface texture typical of a tin trial piece. |
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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 |
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| 附加信息 |
Pattern coinage for Carlos III's Mexican issues was part of a broader administrative overhaul of the colonial mint system in the 1760s and 1770s, as the Bourbon reforms pushed to standardize and modernize production across New Spain. Tin trial pieces occupy an unusual niche — they were struck not as presentation pieces but as mechanical proofs of die alignment and press function, essentially disposable working documents of the minting process.
Very few tin trials from the Mexico City mint survived, as the material was considered valueless once the production run was approved.