Here's the details I found out, Goran:
top: Very Flame Walnut
accent: Purpleheart pinstripe
body: Maple
neck: 11-piece Maple and Purpleheart
scale: 34" long
fingerboard: Ebony
inlays: Pearloid (plastic) inlays
pickups: AXY56
controls: "Elan" volume, pan, filter, Q-switch, mono ouput
originally made for: New Kary, Milan, Italy
birthday: August 18, 1992
I don't think anything is going on with the electronics except for the strange knobs. Maybe the switch has been replaced? or at least the mounting hardware for it. I would advise getting a peek inside to confirm the knobs are the only things that have been changed.
Good luck!