[bav]

Probably depends on jurisdiction. In Nevada, anything on the floor belongs to the casino. There are tales now and then of someone finding $500 and $1000 chips and trying to cash 'em and having them confiscated once the casino figures out they came from their floor. I even read a tale of someone at a slot finding a $100 chip on the floor beside them and pocketing it and 5 minutes later security comes and takes 'em away and they're told they are henceforth persona non grata and are told to leave forever. For $100's, you'll get away with it long as surveillance doesn't happen to see it. I've never found anything bigger than $5 and I just hand it to some favorite poker dealer as a toke.