Watch List notes:

Potosi, Bolivia, cob 8 reales, 1651O, with crowned-L countermark on cross. S-P35; KM-19b; CT-510. 27.26 grams. Broad and uncorroded flan with bold countermark just below the bold date, full cross and shield despite flat areas, lightly toned all over. With Marex tag #91-8R-0100. Maravillas, sunk in 1656 off Grand Bahama Island

Estimate: $350-500