Posted by Klaus on April 19, 2002 at 11:01:12:
In Reply to: Re: An interesting tuba on auction site posted by Vince on April 19, 2002 at 08:38:04:
Thank you very much for the catalogue link!
As I interprete it the auction-tuba is the Doppelbaß in F&B, 7 cylinder.
The F side played by means of the 3 upper left hand valves with the 4th being the master valve to the BBb side which is played with the 3 right hand valves.