Watch List notes:

Potosi, Bolivia, cob 8 reales, 1617 (M), Grade 1. S-P19; KM-10; Cal-921. 26.10 grams. Full 17 of date above bold full cross, good full shield with most of crown above and full denomination O-VIII to right, no corrosion (silvery), parts of edge slightly crude (as made). With Fisher tag and photo-certificate 205066. From: Atocha, sunk in 1622 west of Key West, Florida
($750-1100)