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| Issuer | Portuguese Crown (Bahia Mint) |
|---|---|
| Year | 1727-1750 |
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| Engraver(s) | Antônio Mengin |
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| Reverse description | Central Portuguese royal coat of arms displayed on an ornately decorated shield, surmounted by a royal crown rendered in high relief. The shield displays the five quinas (escutcheons) of Portugal arranged in a cross pattern, enclosed within an elaborate Baroque cartouche featuring scrolling foliage and acanthus-leaf ornamentation. The entire composition is framed by exuberant Baroque decorative elements extending to the coin's border, with the reverse legend IN HOC SIGNO VINCES ('In this sign you shall conquer') appearing around the periphery. The design exemplifies the elaborate heraldic Baroque style associated with the fourth type of shield used during the reign of João V. |
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| Mint | B Bahia, modern-day Salvador de Bahia, Brazil (1694-1698, 1714-1834) |
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| Additional information |
João V established the Bahia mint as Brazil's first functioning gold coinage facility in the early eighteenth century, a direct response to the explosive output of the Minas Gerais gold fields. The 4th Type shield designation reflects one of several successive die modifications made during his reign as Lisbon periodically updated colonial coinage standards — each type change traceable to royal decrees governing the physical presentation of the royal arms.
The twenty-three year emission window for this type is unusually long, suggesting the 4th Type shield design achieved a bureaucratic stability that earlier types did not.