Watch List notes:

Mexico City, Mexico, cob 8 reales, Philip III, assayer D, Grade-1 quality but Grade 4 on certificate. S-M18 25.67 grams. Very solid flan with light surface corrosion only, bold full shield and cross, clear oMD and denomination 8, darkly contrasting toning on fields. With Fisher certificate #137628. Recovered from: Santa Margarita, sunk in 1622 west of Key West, Florida

Estimate: $350 - 500