Watch List notes:

Potosi, Bolivia, cob 4 reales, 1617 (M), Grade 1. S-P19; KM-9; Cal-773. 13.08 grams. Choice full cross with bold 7 and part of 6 of date, full but off-center and slightly doubled shield, bold denomination O-iiii inside of (P)HYL- of king's name, silvery, minimal surface corrosion. With Fisher certificate 214599. From: Atocha, sunk in 1622 west of Key West, Florida
($700-1000)