Watch List notes:

Mexico City, Mexico, 4 reales, Charles-Joanna, "Late Series," assayer L to right, mintmark M to left. 12.64 grams. Solid flan with full legends and inner details but with surface corrosion and uneven toning all over. Pedigreed to the Thomas Gray collection and formerly displayed at the ANA Money Museum's "Treasures of the Deep" exhibit (2014-15), with photo-certificate. Recovered from: Unidentified ca.-1554 wreck off Santo Domingo, Dominican Republic

Estimate: $250 - 375