Posted by An illustration on April 11, 2002 at 10:31:56:
In Reply to: Re: Old Obscure Tuba posted by Chuck(G) on April 10, 2002 at 17:04:22:
Illustration to be seen through the link below.
There are scans of two pages from an Alexander low brass catalogue from around 1985.
The Doppeltuba is at the bottom-right of the second page.