How will I know I do not have one?
To state the obvious, if you don't see one, you don't have one. I'm not sure your looking for that answer but frankly, if the metals are bonded, it should be easy for you to answer your own question.
Not that I answered yours but why is it of any significance to you? Bonding is a dubious way of protecting underwater metals and can just as often cause more problems than solve which is why most mfgs, including Hunter, don't bond everything