Watch List notes:

Mexico City, Mexico, cob 4 reales, Philip II, assayer O below mintmark oM to left. S-M11; KM-36; CT-335. 13.63 grams. Darkly toned XF with no corrosion at all, nice full shield and cross, much legend including king's ordinal II. Pedigreed to the Charles Eidel collection. Recovered from: Unidentified ca.-1590 wreck off the Yucatan peninsula of Mexico ($150-225)