Watch List notes:

Potosi, Bolivia, cob 4 reales, 1664(E ). S-P37a; KM-18; CT-756. 7.72 grams. Thin and worn from corrosion but with bold pillars-and-waves and cross, nicely toned, edge-split. With photo-certificate. Recovered from: Consolacion, sunk in 1681 off Isla Santa Clara, Ecuador (Estimate: $125 - 200)