Watch List notes:

Potosi, Bolivia, cob 2 reales, Philip III, assayer M, Grade 1. S-P18; KM-8. 6.28 grams. Choice full shield and cross enhanced by contrasting toning, bold full P-M, light corrosion only on edge. With original Fisher photo-certificate #7005. Recovered from: Santa Margarita, sunk in 1622 west of Key West, Florida

Estimate: $500