Bell Diameters are 11.0″ & 6 1/2,” bore size is .563″& the height is 30 1/4.”
This horn has the Conn patented short action valves. This instrument differs from the 60I because of those short action valves. The 60I has the old style, long action valves.
IMG_3093 by [url=https://www.flickr.com/photos/129235491@N05/]https://simonettitubacollection.com/ins ... -piston-3/