Watch List notes:

Guatemala, proof brass 1/2 centavo de quetzal, 1932, NGC PR 63, ex-Whittier (stated on label). KM-248. Muted luster and frosty obverse details, miniscule carbon spots on reverse, attractively variable color. NGC #302857-010. Pedigreed to the Whittier collection.

Estimate: $400-600