I can't say what it is, but I don't think is a real Gibson. Black plastic nut and generic TRC gives it away. A shot of the truss rod's nut would probably end all discussions.
Easily explained as aftermarket parts (I have real Gibsons with replaced nuts - not uncommon and hardly affects value.
As for Maple neck, I don't know if we can trust the seller to be knowledgeable enough to say, but Gibson did use maple long scale necks with 4x4 headstock for a time, even if not on LPs. A third option presents itself; this could be real and highly modified, complete fake, or a bit of both (either genuine neck, as genuine Gibson maple bass necks were easily found on ebay for a while, with a random body or vice versa).
I suppose Sir Arthur is correct in any case, though I'd still say that knowing all this, it's worth the opening bid if you're into a project and live in Oz.
