Watch List notes:

Potosi, Bolivia, cob 4 reales, 1658E. S-P37a; KM-18; CT-750. 8.70 grams. Thin from corrosion but with full pillars and (off-center) cross, bold date, no toning. With Florida Division of Historical Resources yellow-plastic tag. Recovered from: San Miguel el Arcangel ("Jupiter Wreck"), sunk in 1659 off the east coast of Florida

Estimate: $200