Watch List notes:

Potosi, Bolivia, cob 4 reales, 1669E. S-P37b; KM-25; CT-494. 12.35 grams. Nice centers on a solid flan (minimal corrosion), darkly toned, with parts of all three dates visible. Pedigreed to the Mark Bir collection (our Auction #6, with original lot-tag #398). Recovered from: Unidentified ca.-1671 wreck in Seville Harbor
($175-250)