I concur with others here, this is a set chip specifically for use in gen 8 aristocrat games. (I have one of these.) If that goobblygook doesn't mean much it's what allows a game such as Buffalo Gold Collection to be setup or changed.
It's worthless to a random user, other than the value of the Cfast card itself, it contains no game software nor OS. I also concur, check with the casino it was found to try and return it in good faith. Specifically, you'll want their Technical manager, or slots Director, security should be able to take it too. There is no chance they would directly use it after losing custody of it without thoroughly investigating it(exact details would depend on their gaming commission.)
If they flat out don't want it back destruction should be safe. Don't go jumping into trying to sell it without thorough knowledge of your local regs!