Bell Diameter Bore Size Height
16 3/8″ .655″ 34 1/4″
“CONN” on bell. Geometrical shapes engraved around identification marks.
IMG_3210 by [url=https://www.flickr.com/photos/129235491@N05/]https://simonettitubacollection.com/ins ... -4-piston/
IMG_3210 by [url=https://www.flickr.com/photos/129235491@N05/]