http://www.ebay.com/itm/191601336859

Bat exhibits no characteristics of Larry Walker.
Bat has #15 on knob, which would match with pitcher Denny Neagle in 2002 on the Rockies. Neagle was left-handed, which would also explain the leftie usage.

I messaged Zane about this, and here is what he said in response to question asking why he doesn't mention in the listing that Walker never wore #15:

"Never said that he did It's his bat
It has his name on it it has use for a left
Handed hitter listing states that uniform
Number fifteen is on the knob Not
His uniform number 15 is on the knob
Players share bats Bat started at $9.95 The market will tell
Us what's it worth Money back if not
Satisfied Regards Zanebats"