While there is generally the same problem of having enough requests
to justify a production run, Christian Wittmann _can_ produce 28-note
Tanzbaer rolls.  (They are also being used on the "Tanz-Orgel" as
developed by Mr. Blueml.)  

  Christian Wittmann
  Franz Lechner Strasse 4
  3012 Wolfsgraben
  Austria
  Tel. 0043 650 530 64 34
  http://www.drehorgelmusik.net/ 
  email: info@drehorgelmusik.net.geentroep [delete ".geentroep" to reply]

Occasionally original rolls pop up on eBay as well.

Ingmar Krause
Coquitlam, British Columbia, Canada
http://www.grindorgans.com/