These are out there... It's probably a paperweight or desk ornament. It isn't part of something else, as I have seen at least a dozen, all of which are identical to yours.
It's somewhat rare, but not a jaw-dropper in terms of value. Figure $100 - $150 for that piece. Yours would be on the high end of that range, since the bat is unbroken/in tact, and condition is nice.
Hope this helps
