Lot of 6 Potosi, Bolivia, cob 8 reales, Philip III, assayers R, Q, T and not visible, all Grade 3, old certificates (pre-"mother lode"). KM-10. 101.53 grams total. Moderately to heavily corroded, most with clear shields and crosses, but mostly attractive for the old tags and certificates. With Fisher photo-certificates #82-541, 82-542, 82-543, 82-552, A84-001 and A84-213. Recovered from: Atocha, sunk in 1622 west of Key West, Florida ($1250-2000)