Brazil
Pedro II gold 10000 Reis 1863 AU50 NGC, Rio de Janeiro mint, KM467, LMB-651. According to Livro Das Moedas Do Brasil, the second-highest valued date in the long-running series spanning from 1853 to 1889, exceeded in value only by its 1859-dated counterpart.
https://coins.ha.com/itm/brazil/brazil-pedro-ii-gold-10000-reis-1863-au50-ngc-/a/3083-32281.s?type=CoinArchives3083
HID02906262019
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Estimate: 1000-1200 USD