Do I get to keep a better product delivered by mistake?

Question

I ordered a product in a store because they had no more left, and when it arrived, it was a better model (about 20 dollars more) and the address on the box was not mine. The question is, am I allowed to keep this product because of the drivers mistake or can they come to claim it?

Answer 1

I am not a lawyer type or anything but I think possession is 9-tenths of the law. I heard that somewhere.

Answer 2

It isn't yours.

It was a mistake on the part of their driver.

You should call them and notify them of the mistake.  If you fail to do so the store may make the driver pay for the "lost" item or even fire him.

Jerry-the-bookkeeper