I bought this guitar about 1978 because I was fascinated by a Grobschnitt concert
I wanted the wild distortion sound of double strings and the only other 12string solid body at the time was Rickenbacher
and this guitar has a phantastic ergonomy. not only its pioneer form (Klein made success with a very similar form only 10 years later!) but also the neck is very nice and easy to reach the high notes
it costed me over 2000, which back then was a lot more than now!
since then I used it rarely. it has some inperfections
the original pickups sound bright, so I replace the neck by a PAF to get a fuller sound. the original pickup is in the case, but I had to cut the pick guard, so in this respect its not original but better 😉
I also disabled the electronics which I considered unnecessary at the time and it needs two batteries and wanted it true bypass. on request I can restore the original state.