Hi Allen,
There's not many details on the early instrument records. Here's the little that I can tell you:
top: Koa
back: Walnut
body: Birch
neck: Maple and Walnut
scale: 34 long
fingerboard: Ebony, fretless
electronics: PF-6 (don't know if it's Series I or II)
originally made for L.D. Heater Music, OR
birthday: November 15, 1974
There is one registered owner from California. Owner's names are confidential.
I don't know what the 10/1/74 date refers to, it's not usual for us to mark with a sticker in the electronics cavity. The serial number is usually on the tippy-top of the peghead like you noted.
Do you own this bass now?