Watch List notes:

Brazil (Rio mint), 6400 reis, Maria I, 1800-R, encapsulated NGC MS 63, tied for second finest known in NGC census. Russo-538; KM-226.1. A flashy, prooflike gem, dripping with luster and flawless in strike and preservation, more like MS 64 in our opinion. Pedigreed to the New England Collection.

Estimate: $1500 - 2250