Watch List notes:

Potosi, Bolivia, cob 4 reales, 1678E, rotated denomination 4. S-P37b; KM-unl.; CT-unl. 11.51 grams. Full pillars with choice tops and bold denomination, corroded cross, nicely toned. With ROBCAR photo-certificate #M110243. Recovered from: Consolacion, sunk in 1681 off Isla Santa Clara, Ecuador

Estimate: $200