Watch List notes:

Costa Rica, brass 5 centimos, 1922, PCGS MS63, finest known in PCGS and NGC censuses, ex-Mayer. KM-151. 1.03 grams. Original color and muted luster, incipient toning, no wear or marks, the only specimen listed in the PCGS census, with four in the NGC census but none higher than MS 61. PCGS #34946903. Pedigreed to the Fred Mayer collection.

Estimate: $200-300