Posted by bloke on December 17, 2003 at 00:08:21:
In Reply to: Pan American Sousaphones posted by Bill V. on December 16, 2003 at 23:59:38:
As long as the bore size is .734" it is for all practical purposes the same.
I have seen just a few Conn-made 14K-looking instruments with a smaller bore size in the valve section, but the same large branches.