Watch List notes:

Potosi, Bolivia, cob 4 reales, Philip III, assayer not visible, Grade 2. KM-9. 11.16 grams. Roundish flan with nearly full shield and cross (the latter off-center), light to moderate surface corrosion, nice toning all over. With Fisher photo-certificate #3670 (replacement copy). Recovered from: Santa Margarita, sunk in 1622 west of Key West, Florida

Estimate: $300 - 450