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50 Réis - João IV Countermarked 1/2 Tostão
| Issuer | Brazil |
|---|---|
| Year | 1663 |
| Type | Log in to see details |
| Value | 50 Réis |
| Currency | Log in to see details |
| 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 |
| Orientation | Log in to see details |
| 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 |
| Reverse lettering | Log in to see details |
| Edge | Plain |
| Mint | Log in to see details |
| Mintage | Log in to see details |
| Additional information |
In 1663, the Portuguese colonial administration in Brazil authorised a systematic countermarking programme to revalue and legitimise older silver coinage still circulating in the territory. Half-tostão pieces — originally struck in Portugal under earlier reigns — were stamped and placed back into circulation at a new tariffed value, a fiscal measure driven by chronic coin shortages in the colony rather than any new minting capacity. Brazil had no operating mint capable of producing fresh silver coinage at this point.
The countermark itself is the authenticating event; the host coin predates 1663 by potentially decades.