Watch List notes:

Potosi, Bolivia, cob 4 reales, 1667E, Charles II. S-P37b; KM-25; CT-492. 13.18 grams. Full but off-center cross and pillars, bold date (first for this king, whose ordinal is visible in legend), lightly toned, with crude peripheries (as made), no corrosion. Pedigreed to our Auction #10, with original lot-tag #834. Unidentified ca.-1671 wreck in Seville Harbor, Spain

Estimate: $250-375