Posted by Klaus' caddy on September 30, 2001 at 23:48:41:
In Reply to: Re: Bell creases as a sound factor posted by Doug Elliott on September 30, 2001 at 22:06:52:
B&M (now owned by Walter Nirschl) made the nicest (.750" [.748" ???] bore, piston valve, large 4/4 size) York "Master" tubas with detachable bells.
I've seen other smaller ones engraved this way...'not certain of their origin.