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9 Réis - João VI Big armillary sphere - Goa mint
| Issuer | Goa Mint |
|---|---|
| Year | 1816-1826 |
| Type | Standard circulation coin |
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| Composition | Log in to see details |
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|---|---|
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| Reverse script | Latin |
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| Mintage | ND (1816-1826) - AG#J6 05.01 (Big sphere) |
| Additional information |
João VI spent the years 1816–1826 ruling from Rio de Janeiro, having fled Lisbon with the entire Portuguese court in 1807 ahead of Napoleon's invasion. Goa, by then a colonial possession already three centuries old, continued striking copper fractions for local circulation under his authority — the armillary sphere a deliberate assertion of Lisbon's imperial reach at a moment when the court itself was operating from a different continent.
The Goa mint's copper output from this period is frequently found corroded or weakly struck, owing to inconsistent alloy preparation and aging equipment.