Hi Juergen,
Here's the details from the instrument file:
top and back: Maple
core: Mahogany
neck: Maple and Purpleheart
scale: 32 medium
fingerboard: Ebony
inlays: mother of pearl ovals
peghead veneers: Walnut
birthday: March 7, 1978
originally made for: Rothchild
That's all there is.