There are some youtube videos around where he's using different basses from different periods. I've seen Les Paul Recording bass, Fender-Jazz and in one of the later clips, what looks like a Alembic. Wonderful player!
Thanks for the reply. The Alembic looking bass is the bass I was wondering about. It looks like an Alembic to me too, but for some reason I just wasn't sure (it's not like I'm that familiar with Alembics).