Potosi, Bolivia, cob 4 reales, 1678E, retrograde 4 for denomination (rare). S-P37b; KM-25; CT-503. 7.89 grams. Bold date and rotated 4 between full pillars, weak cross due to wear but with second date below, edge-splits. With ROBCAR tag #2015595. Recovered from: Consolacion, sunk in 1681 off Isla Santa Clara, Ecuador ($200-300)