Basically what Chris said....
This is a transition Euro bass before Stuart got the rights back to the 'Spector' logo/brand. Full maple, just like the US basses, and well before they switched to the walnut sandwich of the LX models.
These are excellent basses but quite hard to put a value on as some people want the full Spector logo/crown inlay experience while others prefer the more classic build quality of these. With the headstock laminate I'd leave as is though. Let any buyer deal with it, should they deem it necessary.
You're probably talking around £1200-£1500 for this. There are a lot more Spectors out there, and choice of Spector styles, than there used to be so used prices aren't what they could/should be..... and this beauty needs the right buyer!