[varyouga]

Publicity like this will usually raise the auction price manyfold for several reasons:

-far more buyers know
-there is no question about the authenticity or legality of owning the artifacts
-artifacts that are certified part of a heavily publicized wreck, buried treasure, barn, etc are usually worth far more

[Gen.Blather]

“-artifacts that are certified part of a heavily publicized wreck, buried treasure, barn, etc are usually worth far more “

In most places the state simply confiscates the item(s) and the finder gets nothing.