Watch List notes:

Potosi, Bolivia, cob 8 reales, (1)617M, Grade 2. S-P19; KM-10; CT-129. 21.43 grams. Choice full cross with clear date, full and bold shield with light surface corrosion, small parts of edge lost to corrosion, typically silvery. With Fisher certificate #155526. Recovered from: Atocha, sunk in 1622 west of Key West, Florida

Estimate: $350