Watch List notes:

Mexico City, Mexico, cob 4 reales, (1)620/19D, Grade 1. S-M18; KM-unl (37.2 for type). 13.42 grams. Choice full shield and cross-lions-castles, full oMD and denomination 4, bold 20/19 of date (not listed on certificate), no corrosion or toning. With Fisher certificate #129581. Recovered from: Atocha, sunk in 1622 west of Key West, Florida
($600-900)