Watch List notes:

Mexico City, Mexico, cob 8 reales, Philip IV, assayer P. S-M19; KM-45. 24.33 grams. Very odd shape (squarish with a protrusion), with bold full assayer, nearly full shield and cross, peripheral flatness, patchy toning, minimal surface corrosion. With Marex certificate and tag #1774. Recovered from: Maravillas, sunk in 1656 off Grand Bahama Island ($200-300)