Watch List notes:

Potosi, Bolivia, cob 8 reales, 1617M, castles rotated 90 degrees clockwise, choice Grade 1, ex-Bir. S-P19; KM-10 ;CT-129. 26.51 grams. Superb full inner details (shield and cross) AND bold assayer and date (full ANO 1617), also king's ordinal III in legend, striking castles error, excellent toning around details, truly one of the best specimens we have ever seen from this popular wreck. With Fisher certificate #262284 and pedigreed to the Mark Bir collection and our Auction 7, with original lot-tag #189 and Mark Bir tag with sticker price of "$2,000.00 NET." Recovered from: Atocha, sunk in 1622 west of Key West, Florida

Estimate: $1500 - 2250