Watch List notes:

Costa Rica (Central American Republic), 1/2 real, 1831E, PCGS AU55, finest and only specimen in PCGS census, ex-Dana Roberts (stated on label). KM-20. 1.47 grams. Beautifully rainbow toned (lots of blue color), with minimal marks and wear, weak rims (as made). PCGS #34946736. Pedigreed to the Dana Roberts collection.

Estimate: $600-900