Watch List notes:

Mexico City, Mexico, cob 4 reales, Philip II, assayer O below denomination oIIII to right, mintmark oM to left. S-M11; KM-36; CT-336. 12.35 grams. Near-AU details despite very light surface corrosion, full inner details and nearly full legends, steel-gray toning all over. (Estimate: $150 - 225)