Potosi, Bolivia, cob 8 reales, 1667E, Charles II. S-P37b; KM-26; CT-342. 26.57 grams. Full pillars-and-waves with interesting "TOSIOSI" in legend due to doubling, full but partially flat cross with part of king's name in legend on that side (Philip IV is rumored to exist for this date, but we have not seen it), two dates and mintmarks, AVF with toned fields.
Estimate: $200