Mexico City, Mexico, cob 8 reales, Philip III, assayer not visible, Grade-3 quality (10 points), with hand-signed certificate from 1976. 14.71 grams. Thin from heavy corrosion but with clear shield and cross, usual barrel shape, desirable early certificate. With original, hand-signed photo-certificate from 1976 (Cape Coral Bank) #2966. Recovered from: Atocha, sunk in 1622 west of Key West, Florida (Estimate: $250 - 375)