Watch List notes:

Mexico City, Mexico, cob 4 reales, 1639P, rare, ex-Rudman. S-M19; KM-38; CT-701. 12.50 grams. Choice broad flan with excellent full cross and shield (both unusually small), bold full oMP, most of date (last digit not 100% certain), nicely toned all over, practically no corrosion. Pedigreed to the Isaac Rudman collection. Recovered from: Concepcion, sunk in 1641 off Hispaniola
($250-375)