Watch List notes:

Potosi, Bolivia, cob 8 reales, Philip II, assayer B (5th period).S-P14; KM-unl; Cal-672.21.04 grams.Bold shield side with clear mintmark and assayer, corroded cross side, stony gray toning throughout.With Sedwick photo-certificate from 1997.From: San Martin ("Green Cabin Wreck"), sunk in 1618 off the east coast of Florida
($150-225)