Here's what I found:
78-1064 MSB-I
top and back: Purpleheart
core: Mahogany
neck: Maple and Purpleheart, 32 medium scale
fingerboard: Ebony with mother of pearl oval inlays
peghead facing veneers: Walnut
originally made for: Rothschild Distribution
birthday: April 6, 1978
We haven't heard a peep from this bass since I was seven years old!