Watch List notes:

Potosi, Bolivia, cob 8 reales, 1651O, with crowned-dot-F-dot countermark on shield. S-P35; KM-19b; CT-510. 24.03 grams. Very bold full countermark on full but slightly doubled shield, full cross with full 51 of date, lightly toned, light corrosion around edge. With Marex tag #91-8R-0083. Maravillas, sunk in 1656 off Grand Bahama Island

Estimate: $350-500