Watch List notes:

Potosi, Bolivia, cob 2 reales, Philip III, assayer Q, Grade 2. S-P17; KM-8 ;CT-353. 5.93 grams. Round flan with full but very weakly struck shield and cross, full denomination ii and most of king's name, corroded only on edge, patchy toning. With Fisher photo-certificate #4993. Recovered from: Santa Margarita, sunk in 1622 west of Key West, Florida

Estimate: $300 - 450