Hi Kai,
I'm still catching up on these requests. I hope you will still find the information useful. Here's what I found in the instrument file:
top and back: Walnut
core: cherry
through body neck: Maple, Beech, Purpleheart, 32 medium scale
fingerboard: Acacia with mother of pearl inlays
birthday: April 28, 1977
originally made for: Rothchild
The original owner never registered the bass, but it was registered in 1998 by someone in Kansas.