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Dinero 'prieto' - Alfonso X Leon
| Issuer | Castile and Leon, Kingdom of |
|---|---|
| Year | 1269-1277 |
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| Composition | Log in to see details |
| Weight | 1 g |
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| Obverse description | Log in to see details |
|---|---|
| Obverse script | Latin |
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| Reverse description | Log in to see details |
| Reverse script | Latin |
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| Additional information |
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.