Watch List notes:

Potosi, Bolivia, cob 8 reales, 1620T, quadrants of cross transposed, mintmark "q," Grade 1. S-P21; KM-10; CT-137. 19.01 grams. Full date (rare thus) outside of weak full cross, bold full shield with clear q+T to left (retrograde mintmark), light to moderate corrosion all over (more like Grade 2 in our opinion). With Fisher tag and certificate #217744. Recovered from: Atocha, sunk in 1622 west of Key West, Florida
($600-900)