Poor sod who found it.

"I really don't know why you'd hand such an item in."

Indeed not. On the one hand, all good citizens should feel it is their duty to alert their government to such mistakes. On the other hand, they just know that they will never be able to prove that they didn't snarf a copy before handing it in and so doing the Right Thing will almost certainly mean they spend the rest of the lives on the Terror Watchlist.