Watch List notes:

Mexico City, Mexico, cob 2 reales "quasi-Royal," (162)3D. S-M18a; KM-unl (33 for Type). 6.04 grams. Round, even flan (a far cry from the norm for this period) with bold full oMD and shield and denomination, full cross-and-tressure, all well centered, but with legends truncated from corrosion, darkly toned. "Lucayan Beach wreck," sunk ca. 1628 off Grand Bahama Island

Estimate: $250-375