Watch List notes:

Potosi, Bolivia, cob 4 reales, Philip II, assayer B (3rd period). 7.60 grams. Round flan with good full shield and bold P-B despite moderate corrosion and thinning. Pedigreed to the David Horner collection. Recovered from: San Martin, sunk in 1618 off the east coast of Florida

Estimate: $100 - 150