Watch List notes:

Mexico City, Mexico, cob 4 reales, Philip III, assayer not visible. 11.45 grams. Good full cross, full but off-center shield, light (interior) to moderate (edge) corrosion, unevenly toned. Pedigreed to the Thomas Gray collection and formerly displayed at the ANA Money Museum's "Treasures of the Deep" exhibit (2014-15), with photo-certificate. Recovered from: "Rill Cove wreck," sunk ca. 1618 off Cornwall, England

Estimate: $150 - 225