This is my third - I bought a B10 with a busted neck and the lefty B20 with a right handed B20 neck fitted (still has the original model  sticker on the back). It has the B10 body and preamp, B20 neck, pickups and hardware. The body was bashed about a bit so I sanded the whole thing to a matt finish except the ABT logo, with a touch of relic-ing to smooth out the dents.
My first was a white B10, picked it up in the early nineties. I defretted it but lost it after losing contact with a guy who had it in his workshop.
Second was another B10, this had been taken back to bare plywood and played lovely. I had a declutter and put it on eBay where it fetched the grand sum of £26