Brazil
João VI gold 6400 Reis 1820-R MS61 NGC, Rio de Janeiro mint, KM328, Russo-589. A flashy and most attractive coin, sharply struck Uncirculated and fully lustrous with scattered surface marks preventing a higher technical designation. Very rare and most desirable in this engaging quality, and one of very few examples of this elusive type currently certified in Mint State. The cataloguer notes an ex-jewelry piece hammering for $4,250 as lot 23977 in our 9/2013 sale.
Estimate: 8000-10000 USD