Watch List notes:

Mexico City, Mexico, cob 4 reales, Philip IV, assayer P. S-M19; KM-38. 11.90 grams. Nearly corrosion-free but with small piece of edge separated, typical flatness, bold oMP, most of crown and cross and shield. Pedigreed to the David Horner collection. Recovered from: "Jupiter wreck" (San Miguel el Arcangel), sunk in 1659 off the east coast of Florida ($100-150)