Watch List notes:

Mexico City, Mexico, cob 8 reales, Philip IV, assayer not visible (P), uncleaned, with coral and canvas-bag remnant adhering. S-M19; KM-45. 22.62 grams. Typical barrel-shaped flan, somewhat thin from corrosion and dark as uncleaned, the main attraction being the large patch of original canvas (not just an imprint) on the reverse and white-and-green coral on front. With certificate and original tag #31572 and promotional booklet (Shedd Aquarium). Recovered from: Concepcion, sunk in 1641 off Hispaniola ($200-300)