Your so called shipwreck artifact expert,Mel King, is a fraud. I was a diver with Mel Fisher & Mr. King was not there when the bars were being loaded on the ship! Also, the bars have been assayed by professional jewelers and found not to be pure silver....that poor guy at the auction paid way too much. Nat Geo should background check their "Experts" more carefully before making statements like that in front of the world.