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480 Réis - João IV Countermarked 8 Reales
| Issuer | Brazil |
|---|---|
| Year | 1663 |
| Type | Standard circulation coin |
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| Obverse description | Log in to see details |
|---|---|
| Obverse script | Latin |
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| Reverse script | Latin |
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| Additional information |
In 1663, the Portuguese Crown ordered circulating Spanish 8 reales — the dominant trade coin of the Atlantic world — to be countermarked and revalued for use in Brazil. The operation was a fiscal measure: by stamping foreign silver with royal authority, Lisbon could absorb Spanish coin into the colonial monetary system without minting from scratch. João IV had died in 1656, so the countermark bearing his name was applied posthumously under his successor Afonso VI, an administrative anomaly that has puzzled catalogers for generations.
The host coin beneath the countermark is almost always a cob-style cob (macuquina) from one of the South American Spanish mints — Potosí being the most frequent source.