I don't have any certificate with the cue, but the guy I got it from verified that it was a Balabushka, and he just had an honest look about him.
I will also have this cue for sale for $12,000... It's a Winston Model by a guy named Szamboti (I think he's the guy that invented the machine that smooths the ice out at hockey arenas). The same guy that sold me the Balabushka sold this one to me, too, so it's also the authentic article...
If I sell one of these, I plan on drinking lots of rum with the proceeds. If you buy the cue, I will invite you over for Margaritas!