Watch List notes:

Potosi, Bolivia, cob 8 reales, "16221" date (1621), assayer T, quadrants of cross transposed, Grade 1. S-P21; KM-10. 22.59 grams. Bold date with clear extra 2 (double-struck), most of cross, nice full shield with clear P+T, corrosion near edge only, toned all over. With Fisher certificate #118019. Recovered from: Atocha, sunk in 1622 west of Key West, Florida

Estimate: $600 - 900