Another Enigma: https://www.ebay.co.uk/itm/Enigma-Through-Neck-Bass-Guitar-with-Stagg-Hard-Case-in-red-and-natural-wood/323455404707?hash=item4b4f71caa3:g:Tp8AAOSw0NlbosVG
Sadly, it's not a Fender-standard body. Ah well. Maybe I should just put it back in the attic...
I did notice that a Tanglewood Overwater has a 22-fret neck.
https://www.ebay.co.uk/itm/Hutchins-Calypso-single-cut-5-string-bass-guitar/223137935870?hash=item33f40eb1fe:g:PtEAAOSwLxpblUIr
Lucky for me, it's not fretless
Thanks, gentlemen. Unfortunately the Kmise won't do because I am looking for something where the neck itself is 22 frets ' worth long - any overhang would have to be on top of that. I'll have a look at second-hand Ibanez.