Watch List notes:

Potosi, Bolivia, cob 8 reales, Philip II, assayer B (4th period). 24.60 grams. Choice full shield and cross plus full king's name in legend despite light surface corrosion, parts of the edge corroded away, silvery from cleaning. Pedigreed to the Thomas Gray collection and formerly displayed at the ANA Money Museum's "Treasures of the Deep" exhibit (2014-15). Recovered from: Unidentified ca.-1590 wreck off the Yucatan peninsula of Mexico

Estimate: $200 - 300