Watch List notes:

Mexico City, Mexico, cob 4 reales, 1610/09D, Grade 1, rare. S-M17; KM-unl. 11.11 grams. Somewhat odd-shaped flan but with superb full cross and shield and oMD, weak but certain date, excellent toning, slight edge corrosion only. With original Fisher photo-certificate #3321. Recovered from: Santa Margarita, sunk in 1622 west of Key West, Florida

Estimate: $500