Watch List notes:

Potosi, Bolivia, cob 4 reales, 162(?)T, quadrants of cross transposed, Grade 3. 10.83 grams. Clear 162 of date with possible 2 for last digit (which would be rare), full but doubled cross, the shield side oversized and possibly from an 8R die, corroded all over. With Fisher certificate #199396. Recovered from: Atocha, sunk in 1622 west of Key West, Florida

Estimate: $200 - 300