Watch List notes:

Mexico City, Mexico, 4 reales, Charles-Joanna, "Early Series," assayer P at bottom between pillars, PLVSV in rounded panel, encapsulated NGC AU 50, very rare. Nesmith-unl; S-M4; CT-70. Bold and choice details despite light corrosion around edge (probably from the "Golden Fleece wreck" of ca. 1550), very lightly toned. Pedigreed to the Ponterio auction of August 2009 (lot #9096). ($3500-5000)