Portugal
Joao as Prince Regent gold 6400 Reis (Peça) 1806 MS64 NGC, Lisbon mint, KM336, Gomes-32.04. Rarely rivaled quality for the issue, with luminous luster is the minimally marked, satin-like fields and only a touch of central softness as is typical for the date. Tied for the finest graded with two other examples at NGC.
Estimate: 2000-2500 USD