Watch List notes:

Mexico City, Mexico, cob 4 reales, Philip III, assayer D. S-M18; KM-37.2. 10.83 grams. Much flatness and part of edge worn away from corrosion but still one of the better coins from this relatively small find, with clear oMD and most of shield and cross. With Seahawk certificate #91-1A-2507.0063. Recovered from: "Dry Tortugas wreck," sunk ca. 1622 in the Dry Tortugas, west of Key West, Florida

Estimate: $150 - 225