Brazil
Pedro I gold 6400 Reis 1826-B, KM370.2, Russo-607, AU Details - Mount Removed NGC. Tooled. It's quite difficult to find two 6400 Reis of Pedro I from the Bahia mint but Dr. Monteiro managed to collect three. Krause catalog price(s) for this item: $6100 in VF, $9900 in EF, $16000 in UNC.
Estimate: 5000-7000 USD