All very good questions, which I have few answers to
I imagine this had a serial number once upon a time. I have zero backstory on this bass. The people that gave what's left of it to me didn't even know what it was. Neither did I without some searching. I have no idea where the hardware and electronics went.
I also don't know what to do with it. A stock restoration would be sweet, but I imagine a lot of money. Someone has sanded the fretboard, so it would need refinished. I'm not much of a fretless player, especially unlined. I've had thoughts of having it fretted and using a mag pickup of some type, only because it's a lightweight bass that is well built and the back of the neck feels good.