Brazil
João V gold 12800 Reis 1729-R AU58 NGC, Rio de Janeiro mint, KM140, Russo-195. A lustrous and well detailed example of this popular type, showing scant high-point friction evidence and only mild surface handling marks, all consistent with the assigned grade. Very scarce and quite desirable in this engaging quality, with only four coins currently certified higher by NGC.
Estimate: 7000-9000 USD