Well looking at the additional pictures on ebay, it is no Huebler that I know of? It has a piloted joint. The shaft don't match thus, I am guessing it is an aftermarked clone shaft of some kind with a brase insert. The brass does go into the SS joint, but not like any Joss or RB I have ever seen. I know Black does very sometimes from his designs, but this is nothing like his other stuff?
I am guessing a production cue of some sort? Maybe a rare Meucci? I did see one "original" with a piloted joint in the middle 80's. It belong to a local road player.