Watch List notes:

Brazil (Rio mint), 6400 reis, Maria I (widow bust), 1788/7-R, encapsulated NGC AU 58, second finest known in NGC census. Russo-unl. (cf. 525); KM-218.1. Choice strike except for part of rims, with eye-catching luster but too many lines in fields to make NGC Mint State, still notable as one of only two listed in the current NGC census of gradable specimens. Pedigreed to the New England Collection.

Estimate: $1000 - 1500