Brazil
João Prince Regent 640 Reis 1813-R AU58 NGC, Rio de Janeiro mint, KM256.2, LMB-415, Bentes-340.08. Overstruck on a "J" series 600 Reis of Jose I with shield countermark, revalidated as 640 Reis. Countermark prominently displayed on the obverse over the shield, the design elements well-centered and precisely struck, rendering most of the undertype legends to be obliterated.
https://coins.ha.com/itm/brazil/brazil-joao-prince-regent-640-reis-1813-r-au58-ngc-/a/61216-99091.s?type=CoinArchives61216
HID02906262019
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Estimate: 600-800 USD