Watch List notes:

Potosi, Bolivia, cob 4 reales, Philip II, assayer B (3rd period), Grade 2. S-P10; KM-4.2. 13.21 grams. Broad flan with full cross-and-tressure with hammer-mark near center, full but doubled shield with bold mintmark, part of legend showing sideways-comma separator, nicely toned and practically corrosion-free. With Fisher tag and certificate #184237, pedigreed to the Stuart Auerbach collection (see lot 4). Recovered from: Atocha, sunk in 1622 west of Key West, Florida
($400-600)