Mexico City, Mexico, cob 8 reales, (1)680(L). S-M21; KM-46; CT-280. 24.22 grams. Clear 80 of date, bold mintmark, most of shield and cross on a small, thick flan, minimal corrosion, toned all over. With generic certificate from the salvagers. Joanna, sunk in 1682 off South Africa
Estimate: $125-200