Watch List notes:

Potosi, Bolivia, cob 4 reales, Philip III, assayer T, Grade 3. S-P21; KM-9. 12.95 grams. Full but off-center cross and shield, clear assayer, partial date, nicely toned and nearly corrosion-free (at least Grade-2 quality in our opinion). With Fisher tag and certificate #155910.Recovered from: Atocha, sunk in 1622 west of Key West, Florida
($400-$600)