Hi Werner,
Here's what I found in the instrument file for 90P5959:
top: Flame Maple
no accent laminate
body: Maple
neck: Maple, 32 medium scale
fingerboard: Ebony with pearloid oval inlays
pickups: PJZ
controls: 2 volume, 1 filter, mono output
body shape: Spoiler
peghead: cone
finish: transparent purple (a little lighter that the previous one we sent them)
tuners: chrome Schaller
hardware: polished brass
birthday: not recorded, but likely late May 1990 (last recorded operation on the work order is rubout on May 19th).
originally sold to: Mesa Boogie, Germany
I guess the first bass we sent them in clear purple was too dark, so they asked for this one to be a little lighter in color. There are no other details in the file.