Brazil
João Prince Regent gold 6400 Reis 1810-R MS63 NGC, Rio de Janeiro mint, KM236.1, Russo-560. Choice Uncirculated with lightly toned fields, sharply struck details and only the few expected surface abrasions at this level. A handsome example, conditionally very scarce in this quality with only three examples currently certified higher by NGC.
Estimate: 1500-2000 USD