Watch List notes:

Potosi, Bolivia, cob 8 reales, Philip III, assayer not visible, Grade 3. KM-10; Cal-Type 165. 17.24 grams. Bold and full but moderately to heavily corroded shield and cross, interesting worm-like channel (from corrosion) on cross side, colorful toning. With original Fisher tag and photo-certificate 4651. From: Santa Margarita, sunk in 1622 west of Key West, Florida
($300-450)