Watch List notes:

Potosi, Bolivia, cob 8 reales, 1617M, denomination as O-III-V (rare), Grade 1. S-P19; KM-10 ;CT-129. 24.66 grams. Broad, round flan with full shield and cross, bold 17 of date, clear P-M (small), tan-toned and mostly corrosion-free but some flat spots. With Fisher certificate #186689. Recovered from: Atocha, sunk in 1622 west of Key West, Florida

Estimate: $600 - 900