Looking through the splendid [url="http://www.fuenfhunderteins.de/index1.htm"]funfhunderteins.de[/url] galleries (there went my evening), I'm wondering if this might be a 65-ish Hofner body (note the two-piece back) that's had a replacement neck made for it at some point. I can't see a good match for the neck's skunk stripe, or the size and placement of the neck plate, or the long fretboard extension, in any of the real Hofners or clones they have pictures of...
Regardless of what it turns out to be, it's a nice-looking bass that's obviously got an interesting story behind it, and I hope you get it up and running again :-)