Watch List notes:

Potosi, Bolivia, cob 8 reales, Philip III, assayer R (curved leg), ex-Horner. S-P15; KM-10; Cal-912. 19.14 grams. Irregular seawater corrosion with some bold areas of shield and cross detail, faint assayer visible, fairly scarce wreck. Pedigreed to the David Horner collection. Recovered from: San Martin ("Green Cabin Wreck"), sunk in 1618 off the east coast of Florida.

Estimate: $150 - $225