Here is a great example of a U12 5 & 6 Zum in lovely green .. $2,400.00 plus shipping. Ill send more pix when ask .. It can be configured any way you want.
Its easy to change rods and levers .. Ive got it set up with E to F on LKL and E to Eb on RKL just my way of doing it all the rest are standard U12. ask me anything but i don't have the year .. I've had it as my studio guitar for about 3 years ..