Watch List notes:

Potosi, Bolivia, cob 4 reales, Philip III, assayer M/Q, rare, Grade 1. S-P18; KM-9; CT-unl. 12.32 grams. Very bold M/Q to left of nice full shield, the cross also full (slightly off-center and with doubling at bottom right), minimal corrosion, steel-gray toning. Pedigreed to the Classics collection, with Fisher tag and certificate #118711. Recovered from: Atocha, sunk in 1622 west of Key West, Florida

Estimate: $750-1100