Amateur Treasure Hunter Uncovers $462,000 Artifact 8.51K Max Read 09/13/10 10:00PM Filed to: finds finds ancient rome Great Britain treasure hunting Helmets christies You know how you always make fun of those people at the beach with the metal detectors? Maybe you shouldn't: A British "metal detector enthusiast" just uncovered a rare Roman bronze helmet expected to earn some $462,000 at auction.