Hi Roger,
Here's what I found in the file:
86-3985 SB-I 4-string Series I
top and back: Bird's-eye Maple
body: Mahogany
neck: Maple and Purpleheart, 30.75 short scale
fingerboard: Ebony
pickups: SC-1
electronics: Series I
originally made for: not recorded
birthday: May 8, 1986
Original owner never registered. It was registered to an owner in Georgia in 1995 (who reported it was purchased in 1988). It travelled back to California a few years later and a set of gold Schaller tuners was purchased for it.