Hey @Rich
You know there's a Wal 5er (with a spare neck) is on eBay at the moment.
https://www.ebay.co.uk/itm/Wal-Fretless-5-string-bass-with-extra-neck/203244542464?hash=item2f52519a00:g:c~8AAOSw0sZf-426
Headstock seems familiar - reminiscent of something from the 80s but for the life of me I can't remember what it is.
https://www.ebay.co.uk/itm/Bass-Guitar-Used-Gold-body-4-string-Case-included/254831134901?hash=item3b551e88b5:g:RnEAAOSwjkxf-1gv
or the combo for even fewer
https://www.ebay.co.uk/itm/Ashdown-Engineering-Mag-300-bass-amp-untested/184615605486?hash=item2afbf294ee:g:yCQAAOSwyHhf9Jc6