Posted by Dan Schultz on June 30, 2000 at 16:22:34:
Do any of you repair guys have a listing on a low brass instrument 'True Tone'? The serial number is 256710. I haven't actually seen the horn... only a picture. It appears to be either a large euphonium or a small tuba. Key unknown. It has three side piston valves. The bell is forward facing and detachable.... maybe as large as 14" diameter.