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| 表面の説明 | Central field displays a stylised castle of three towers with an arched gateway, rendered in the Romanesque heraldic tradition characteristic of Castilian coinage; the central keep is flanked by two lower corner towers, each surmounted by battlements. The castle motif is enclosed within a beaded inner circle. The surrounding legend, separated from the central device by the beaded border, reads ALF REX CASTELLE in Gothic Latin capitals. The flan is irregularly shaped, as typical of hammered medieval coinage, with some letters partially off-flan. |
|---|---|
| 表面の文字体系 | Latin |
| 表面の銘文 | ログイン して詳細を見る |
| 裏面の説明 | ログイン して詳細を見る |
| 裏面の文字体系 | ログイン して詳細を見る |
| 裏面の銘文 | ログイン して詳細を見る |
| 縁 | ログイン して詳細を見る |
| 鋳造所 | ログイン して詳細を見る |
| 鋳造数 | ログイン して詳細を見る |
| 追加情報 |
The "prieto" — meaning dark or black — was coined under Alfonso X's sweeping monetary reforms of the 1270s, part of his broader effort to standardize coinage across Castile and León following decades of fragmented regional issues. The low silver content of the billon gave these coins their characteristic dark appearance in circulation, which is precisely where the popular name came from rather than any official designation.
Alfonso's monetary legislation, codified in part through his legal compendium the Siete Partidas, attempted to regulate exchange rates and restrict the circulation of foreign coin — a policy his own debased issues quietly undermined.