Posted by Klaus on January 07, 2003 at 22:56:13:
In Reply to: unidentified F tuba posted by Richard Cox on January 07, 2003 at 19:20:34:
The by far most likely German maker of stencil instruments would have been B&S of Markneukirchen in the former GDR. Their second line, Weltklang, can be found under many different names.
Another maker behind many stencil instruments was Cerveny/Amati of Czechoslovakia. Many of their old models still can be found in their catalogues, yet with linkages and springs in more modern versions.
The same modernisations are to be found on the only Weltklang documentation, that I can offer you:
Weltklang (the B&S second line) rotary tubas in F, Eb, and BBb from a 1985 catalogue. (2730KB)
http://groups.yahoo.com/group/YorkMasterPublicPhotosVI/files/Weltklang-Tubas.pdf
Thumbnails of the Eb and BBb versions: http://photos.groups.yahoo.com/group/yorkmasterpublicphotosvi/lst?&.dir=/Weltklang+rotary+tubas+Eb+und+BBb+1985
You will have to sign up to the free, open, and non-posting group linked to below here.
Klaus