A limited edition Yomega Fireball from 1999. It's unknown if this yo-yo was released in association with an event, contest, store, or something else.
This particular version with clear rims and translucent blue side caps is very hard to find. There is also a version with translucent red rims and black side caps which is more common than the version in this exhibit, but still hard to find.
(The sidecap on the yo-yo appears scratched in the picture. In reality, it's the outside of the plastic packaging that is scratched and marred.)