Watch List notes:

Mexico City, Mexico, cob 4 reales, Philip II, assayer O below mintmark oM to left, denomination oIIII to right.S-M11; KM-36; Cal-505.13.18 grams.VF with full shield and a widely doubled cross, plenty of detail in the legends including much of the king's name and ordinal, some scuffs on the darkly toned surfaces.From: Shield Type
($125-200)