Mexico City, Mexico, cob 8 reales, Philip IV, assayer P, ex-Blanchard. S-M19; KM-45; Cal-Type 319. 25.87 grams. Atypically round, with bold full cross, nearly full shield with bold full oMP (the P oversized), silvery and peripherally flat but corrosion-free. With Blanchard wallet-style certificate and tag 54,756. From: Concepcion, sunk in 1641 off Hispaniola
($200-300)