Watch List notes:

Potosi, Bolivia, cob 8 reales, 1651O, with crowned-dot-F-dot countermark on shield. S-P35; KM-19b; CT-510. 21.48 grams. Corroded and crudely toned but with bold full countermark, two assayers. With Marex tag #91-8R-1218. Maravillas, sunk in 1656 off Grand Bahama Island

Estimate: $300-450