Watch List notes:

Potosi, Bolivia, cob 8 reales, 1621 T, date as "1612" (very rare), Grade 3. S-P21; KM-unl; Cal-unl. 21.57 grams. Full 612 of date, full shield and most of cross despite areas of heavy corrosion, lightly toned. With original Fisher tag and certificate 85A-133456. From: Atocha, sunk in 1622 west of Key West, Florida
($500-750)