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37½ Reis Golden Vintém - João VI
| Issuer | Casa da Moeda do Brasil |
|---|---|
| Year | 1818-1821 |
| Type | Log in to see details |
| Value | Log in to see details |
| Currency | Real (1799-1942) |
| Composition | Log in to see details |
| Weight | Log in to see details |
| Diameter | Log in to see details |
| Thickness | Log in to see details |
| Shape | Log in to see details |
| Technique | Log in to see details |
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| Engraver(s) | Log in to see details |
| In circulation to | Log in to see details |
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| Obverse description | Log in to see details |
|---|---|
| Obverse script | Log in to see details |
| Obverse lettering | Log in to see details |
| Reverse description | Log in to see details |
| Reverse script | Latin |
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| Edge | Log in to see details |
| Mint | Log in to see details |
| Mintage | 1818 M - Minas Gerais (Vila Rica) - 200,000 1818 R - Rio de Janeiro mint (rare) - 1819 M - Coin alignment - 1819 M - Minas Gerais (Vila Rica) - 1821 M - Coin alignment - 1821 M - Minas Gerais (Vila Rica) - |
| Additional information |
The golden vintém — so nicknamed despite being struck in copper — was introduced as part of João VI's effort to rationalize Brazil's fractional coinage after the Portuguese court relocated to Rio de Janeiro in 1808. The 37½ reis denomination is arithmetically awkward by any standard, a product of reconciling colonial accounting traditions with Portugal's vintém-based system, where 20 réis equaled one vintém and fractions accumulated through trade necessity rather than rational planning.
KM#317 is known with minor die variations across the 1818–1821 run, reflecting the Casa da Moeda do Brasil's inconsistent production capacity during this transitional period.