Watch List notes:

Potosi, Bolivia, cob 2 reales, (1)6(1)7(M), Grade 1. S-P19; KM-8; CT-356. 6.36 grams. Choice full shield and cross, bold denomination Z, attractively toned, minimal surface corrosion. With original Fisher photo-certificate #5924. Recovered from: Santa Margarita, sunk in 1622 west of Key West, Florida

Estimate: $500