Watch List notes:

Potosi, Bolivia, cob 8 reales, Philip III, assayer T, Grade 2.S-P21; KM-10; Cal-Type 165.24.49 grams.Bold full shield and (slightly off-center) cross, large P mintmark and weak but certain T assayer, light corrosion.With Fisher tag and photo-certificate #80M-1334. From: Santa Margarita, sunk in 1622 west of Key West, Florida
($600-900)