Watch List notes:

BRAZIL: Republic, AR medal (26.38g), 1957, Bruce-XCC13.2, countermarked on 960 reis 1815 (type KM-307) (mint letter obscured by countermark, probably R), for the Regional Air Navigation Meeting, São Paulo, on the obverse (in English), for Inauguration of the Santos Dumont Museum on the reverse (in Portuguese), UNC on AUirculated host. The Brazilian host is itself overstruck on 8 reales of Chile, 1808-So, with assayer (A)J.

Estimate: 180-220 USD