Any data on this serial number is appreciated.

Hi Wayne,
 
Here's what was in the file:
 
Signature Standard MJLB4
 
top: Coco Bolo
accent: Maple laminate
body: Mahogany
neck: 3 Maple with 2 Purpleheart laminates, 34 long scale
fingerboard: Ebony with mother of pearl inlays and red side LEDs
bodyshape: Standard Omega
pickups: AXY
controls: volume, pan, filter x2, 2-position Q-switch x2, mono output
finish: polyester gloss body with satin neck feel
originally made for: Bass Central, FL
birthday: May 11, 2004
 
There's no other details - no previous owners or repairs.  
 
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