Maria I gold 6400 Reis 1789-B, KM218.2, MS61 NGC, veiled bust, very scarce date from the Bahia Mint, full mint luster with just a bit of handling in the obverse field. Krause catalog price(s) for this item: $700 in VF, $1100 in EF, $1800 in UNC.
Estimate: 3000.00-4000.00 USD