Watch List notes:

Potosi, Bolivia, cob 8 reales, Philip III, assayer Q, Grade 2.S-P17; KM-10; Cal-916.16.57 grams.Well-detailed full shield with clear P-Q, full but slightly off-center cross, moderately corroded with ragged edge, very silvery all over.With Fisher tag and photo-certificate #80M-470. From: Santa Margarita, sunk in 1622 west of Key West, Florida
($500-750)