Posted by Lew on October 07, 2002 at 07:19:07:
In Reply to: 20K Model Number posted by LZ on October 07, 2002 at 00:14:13:
If it's anywhere it would be on the bell collar, but a 20K is probably the easiest sousaphone to identify. If it has short action valves with oval valve ports, it's a 20K.