Watch List notes:

Mexico City, Mexico, cob 4 reales, 1620(D), rare. S-M18; KM-37.2 ;CT-237. 10.62 grams. Bold date and oM, most of shield, nearly full cross, light surface corrosion and part of edge crude but all nicely toned. Pedigreed to the Sao Jose research collection, with certificate, booklet, DVD and NGC tag #1974063045. Recovered from: Sao Jose, sunk in 1622 off Mozambique, east of Africa

Estimate: $300 - 450