Potosi, Bolivia, cob 4 reales, 1679 V. S-P39; KM-25; Cal-524. 6.35 grams. Thin from corrosion but with full (off-center) pillars and cross, unevenly toned. With original ROBCAR tag and photo-certificate #2020028. From: Consolacion, sunk in 1681 off Santa Clara Island, Ecuador
($250-375)