Hello!  As far as I know, there are two German firms offering a 20er
Drehorgel, or 20-note busker organ, as a kit: Stueber of Berlin, and
Schlemmer of Balingen near Stuttgart.  See

  http://www.barrel-organ.net/bausatzfotos.htm and
  http://www.drehorgelbau-schlemmer.de/index2.htm

The pictures speak for themselves!  Now, has anyone of you MMDers had
any experience with these kits?  And which one would you recommend?

Christofer Noering
Stockholm, Sweden