Yea it's mine. Got it as a HS graduation present in 1986 from a local music store (West Springfield MA) that doesn't exist any more. As mentioned, in my tinkering days treated the bass VERY poorly and was sort of wondering if it was in any way worth it to sink any money into restoring it. One of the knobs broke and of course I just threw it away. Now I can't find any that match. They were barrel type knobs like this:
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except they are black with red numbers, I can find black with white, but not red (matches the binding & dots). I've also misplaced the cavity cover (had the SN# on it if I remember right

) and truss rod cover. The pickups are the originals, no idea who made them but I'm sure they aren't EMGs, just 2 standard looking P-types (a bit rusty from my humid basement.) I always wondered about the wood and mahogany would make sense since the dings on the corners do show a rather dark wood underneath. And I like that it's possibly neck through, I was never sure and you can't tell because it's painted but I always assumed that it was probably an inset or glued on neck. I had also lent the bass to a friend of my little sister so he could use to record a demo for his band. He had always thought it was better than the bass he was playing at the time (I forget what he was playing but the band, Moriah or something like that, moved to LA and became Powerman 5000... go figure...) and when he had it some of the fingerboard dots started to fall in so the filled them in with epoxy (kinda poorly, air bubbles and all but I can't complain, at that point the bass just had 2 volume pots.
If I were ever to consider getting rid of it I'd certainly give you a first crack seeing how you're the first person since I've bought it who didn't say "Takamine doesn't make solid bodies, that must be a fake!!!"
I also had sent an e-mail to Tak about it but never heard a reply. And if I remember correctly (doubtfull) their web site said something about having their mail server delete any messages with attachements so don't bother sending. Would you happen to still have the address of the tech? I've always wondered if there was a model name or number that this thing had or what not. I don't remember there being any kind of user manual or anything like that when it was new (but I was young and probably just tossed it if there was...

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MAN do I have a tendency to get long-winded... Thanks for the info and all!!