TubeNet

Because of a question in another tuba context I happened to google and find what so far appears being the best listing of serial numbers from the said companies:

http://www.horniman.ac.uk/media/_file/b ... ts_web.pdf

Klaus

One more relevant link just came in:

http://www.ecalpemos.org/2012/09/besson ... r.html?m=1

Another source, which may be derivative of the above referenced sources:

http://www.saxworx.com/boozy2.htm" target="_blank