Bassassin

I've never been entirely sure 'Hondo II' was actually a thing. The logo started appearing on Hondos from the early 70s & I'm inclined to think the part that looks like a Roman numeral is (or at least was originally) just a bit of the design, but it sort of stuck as a name. Later Hondos have a couple of different logos that don't have a number. Aria Pro II was a rebrand/update of the Aria brand, so the Pro II bit was meant to suggest improvement/advancement - although unlike Hondo (a US brand originally owned by International Music Corp) it's proper Japlish & therefore borderline inexplicable. The Aria & APII brands continued side-by-side & have been known to appear on the same instruments, so it's anyone's guess. The parent company is Shiro Arai Co, so at least you can see where it started!

Steal. Probably Matsumoku - my Westbury Track 2 has that style of plate & apparently those were all Mats. Pickup almost certainly a DiMarzio (stick a hex key in a pole piece, should be Imperial so metric won't fit) and worth the price on its own. I love the fact that deals like this still come up.

That's a really interesting read. In its own way, this weird/hideous bass is a proper bit of UK music history, as is its original owner. It should be restored & stuck in an (unfortunately non-existent!) museum!

Conditional recommendation for Streetshirts here - I've used them for band, work & novelty stuff for years. For the most part they're very good considering how inexpensive they are but print durability is variable & I've had a few average-quality prints too. The design interface is OK for upoading completed artwork but it's important to enter the actual size you want the the design to be, not what it looks like on the screen. Not sure how it will handle the OP's (excellent!) artwork but what's good is that a one-off with a single front print is £17 delivered, so not too much of an outlay for a sample. There are significant reductions for bulk & they'll print on any colour shirt.

It's a Musicvox Momo 8-string. Or is it? https://www.ebay.co.uk/itm/305054963788

Back when these came out, I had no idea the Duke existed, never mind that the Alien was a knockoff - I just assumed it was a cheap, low-effort way of making a headless bass. To be fair, I 'borrowed' that concept with my first guitar (originally a Columbus SG copy) after it had a minor accident...

Looks really tidy. If it was local to me, I'd be half-tempted to make a cheeky lowball offer just out of curiosity. Although I did play one of these in a shop when they were new (first headless I ever touched, in fact) and my initial impression was that it was rubbish. IIRC the guy in the shop apologised & said it "wasn't exactly a Steinberger".

Would make several hundred times more sense with proper headless bridge/tuners

That's exactly what it is. Pickup's a DiMarzio Model P.

Looking at the damage, the black's original. I'd put cream covers on it for that pukka 70s look.

Late 70s (hooky headstock shape says 1976 or later), made by Matsumoku. The pickups (or those red covers at least) & the BA2 aren't original, and it may have been refinished - 9 times out of 10 MIJ Jazz copies will be sunburst or natural. For the most part the serials Matsumoku used on 'Steel Adjustable' neckplates are random & can't be dated. They used several different formats but weren't consistently dateable until probably around 1980.

What - Leo Fender was from Lithuania? Fwiw they do look nice & if the Shoreline Gold had a maple neck I'd be getting twitchy.

The Corts are nice but (fortunately for my GAS) there doesn't seem to be a 4, at least not yet. That's also about twice the price of a Squeee - or would be if you could buy one anywhere1

Missed it. What was it - a Super Headless through-neck (The Gallery currently has one at £600) or a Quantum/Rail? Wouldn't pay £650 for either of those but I'm dribbling a little at The Gallery's pics.

I think in the Real World, I'd struggle to spend that across a range of instruments/recording gear at the moment, never mind just the one bass. I've had terrible GAS in the past & have ended up with all of my musical needs over-carered for - although in fairness (to myself) my tastes aren't particularly expensive so I have an embarrassment of (mostly) cheap-but-decent gear. In the not-so-real world, & if it had to go on just the one bass, I think it'd be time visit a few luthiers & see if my vision of a headless, lightweight, double-neck through neck(s) fretted 4/fretless 5 prog nightmare bass is actually achievable. I have drawings & everything...

Even says 'Fresher' on the headstock. Midrange mid 70s MIJ copy made by Chushin Gakki, nice enough. Decent fixer-upper for £50, particularly if you could beat them down to £40.

Cream. Needs a black scratchplate really but it just yells '70s Rock Machine'!

I used a Session 4x10 bass combo from the mid 80s to the end of the 90s. Poor man's Trace Elliots, those were. Very bright & directional, & needed an extension cab if you wanted any appreciable bottom end. In fairness it made a better guitar amp than bass amp.

One or two cynics on FB saying exactly that!

And only £3k over list price.