Mexico City, Mexico, cob 8 reales, Charles II, assayer L. S-M21; KM-46. 23.93 grams. Choice specimen from this wreck (minimal corrosion), bold oML, once polished but starting to re-tone. With (generic) certificate from the salvager. Recovered from: Joanna, sunk in 1682 off South Africa (Estimate: $100 - 150)