Watch List notes:

Mexico City, Mexico, cob 1 real, Philip II, assayer O to right, mintmark M to left, NGC AU 55. S-M11; KM-unl; Cal-unl. 3.36 grams. Richly toned with choice full cross-lions-castles and well-detailed but double-struck full shield below full crown, bold king's name in legend, clear assayer O to right but mintmark to left weak but decidedly without o above, second highest grade in NGC census (variety not specified).

Estimate: $200 - $300