Watch List notes:

Potosi, Bolivia, cob 8 reales, 1649 (O), with crowned-dot-PH-dot countermark on shield, ex-Mastalir (Plate). S-P35; KM-19b; Cal-1487. 23.05 grams. Solid flan with minimal surface corrosion, good full cross and shield, the former with right side of 9 of date visible and the latter with practically full countermark near center, attractively toned for good contrast. Pedigreed to the Robert Mastalir Collection and plated on page 360 of Part B of his books The Great Transition at the Potosi Mint, 1649-1652: The 1649-1652 Crowned Shield Coinage and the Countermarks of 1652 (2021), with copy of Moro certificate countersigned by Daniel Frank Sedwick.Recovered from: Capitana, sunk in 1654 off Chanduy, Ecuador.

Estimate: $400 - $600