Watch List notes:

Mexico City, Mexico, cob 4 reales, Philip II, assayer O below mintmark oM to left. S-M11; KM-36; Cal-505. 13.27 grams. Broad-flan AU- with very choice full cross-lions-castles and well-detailed shield, nearly full legends and crown, edge-split, nicely toned but with a couple spots of encrustation and oxidation near edge.
($250-375)