Watch List notes:

Potosi, Bolivia, cob 8 reales, 1651E, with crowned-O countermark on cross side. S-P36; KM-19b; CT-511. 19.23 grams. Choice detail all over despite corrosion and wear (also good contrast from toning), with bold full date (modern 5), most of countermark, full cross and shield. Recovered from: Capitana, sunk in 1654 off Chanduy, Ecuador

Estimate: $350-500