Potosi, Bolivia, cob 1 real, Philip IV, assayer T. S-P22a; KM-12. 1.82 grams. Choice full cross with partial date (possibly [162]5, which would be very rare), good but off-center shield with clear P-T to left, nicely toned, a bit thin from corrosion. Recovered from: Consolacion, sunk in 1681 off Santa Clara Island, Ecuador (Estimate: $100 - 150)