Watch List notes:

Brazil (Rio mint), 6400 reis, Joao Prince Regent, 1810-R, encapsulated NGC MS 64, tied for finest known in NGC census. Russo-560; KM-236.1. Nice strike and lustrous all over, with faint streak of toning, virtually perfect except for adjustment marks near reverse rim at 9 o'clock, still none finer. Pedigreed to the New England Collection.

Estimate: $2500 - 3750