While walking on the beach you stumble on a valuable object buried in the sand — say, a piece of jewelry or an envelope full of cash. What do you do with it? Under what circumstances would you keep it?
Buried implies that somebody deliberately put it there. If that’s the case then I keep it. It’s not my fault if someone was stupid enough to bury crap on the beach.
If it’s obvious that someone lost it, then I turn it in to whatever authorities are available; Lost and Found at the beach (if there is such a thing), or the cops.
If it’s a TON of money…well, I’ve seen enough cop and detective shows to know that it’s probably mob money or something. And unless I only have about 2 weeks to live, then I’m not keeping it. They always find you. And then they pop a cap in your ass and bury you in the desert.