Potosi, Bolivia, cob 4 reales, 1666E. S-P37a; KM-18; CT-758. 10.22 grams. Full but off-center cross and pillars-and-waves, very dark all over and with light corrosion. Pedigreed to the Mark Bir collection (our Auction #8, with original lot-tag #624). Recovered from: Unidentified ca.-1671 wreck in Seville Harbor
($125-200)