Posted by occasionally on December 14, 2003 at 10:17:07:
In Reply to: Vintage BBb's posted by Researcher on December 14, 2003 at 09:24:24:
I've come across some older "4/4" Conn BBb tubas (still Elkhart vintage, not northeastern).
Their body branches are somewhat (but not terribly) larger than the 60's/70's 2-3-4-5-6-7-8-9-10-11J tubas, as is their bore size.