Watch List notes:

Mexico City, Mexico, cob 8 reales, Philip IV, assayer P. S-M19; KM-45. 18.94 grams. Bold cross, full oMP and shield despite moderate corrosion all over, patch of thick, dark encrustation on shield, rare provenance (salvaged by Arqueonautas). With certificate. Recovered from: "San Francisco wreck," sunk ca. 1647 off the Cape Verde Islands, west of Africa
(125 - 200 USD)