Mexico City, Mexico, cob 8 reales "greenie," completely cocooned in encrustation as found. 27.95 grams total. Small but thick coin made even thicker by appended crust of shells and coral, lots of green and white color, obscuring all the coin details, scarce and popular thus. With hand-signed Mel Fisher certificate dated October 31, 1967. Recovered from: Spanish 1715 Fleet, east coast of Florida (Estimate: $250 - 375)