Watch List notes:

Lot of two Potosi, Bolivia, cob 4 reales, Philip III, assayers R (curved leg) and M, Grade 2, with tags only (certificates missing). KM-9. 17.76 grams total. Both with good full shields but corroded crosses, nicely toned. With Fisher tags #3192 and 8244. Santa Margarita, sunk in 1622 west of Key West, Florida

Estimate: $250-375