Watch List notes:

Mexico City, Mexico, cob 4 reales, Philip III, assayer F, Grade 1. S-M12a; KM-37.1; Cal-745. 13.74 grams. Exceptionally choice and uncorroded, with bold oMF and denomination 4, well-detailed full shield and cross, clear GRATIA in legend where the date would be the later type, nicely toned in crevices. With Fisher tag and photo-certificate 85A-125030. From: Atocha, sunk in 1622 west of Key West, Florida
($1500-2250)