Watch List notes:

Potosi, Bolivia, cob 8 reales, Philip III, assayer M, Grade 3. S-P18; KM-10; Cal-919. 20.81 grams. Nice cross-lions-castles but rest of coin lightly corroded and silvery all over, clear P-M, tangential part of legend lost to corrosion. With original Fisher tag and photo-certificate 87M-137169. From: Santa Margarita, sunk in 1622 west of Key West, Florida
($350-500)