Watch List notes:

Mexico City, Mexico, cob 4 reales, Philip IV, assayer P.S-M19; KM-38.13.01 grams.Rather nice with full and bold shield and cross (if a bit off-center) plus clear assayer initial, a few tiny edge cracks as made, dark-colored surfaces with faint saltwater corrosion.From: Concepcion, sunk in 1641 off Hispaniola
($150-225)