I think that is what it is called. I have seen some aftermarket French Horn bells and they had a ring around the outer edge that looked like the tone ring on the old Getzen Delux Tone Ballanced trumpet's. They usualy have a floral patern on them. I would love to have somethign like that added to what ever bell I end up useing!! I love detail on instrument's. In fact I was considering haveing some engraveing done as well. I am tired of looking at the so called "modern trumpet" which is devoid of personality. Even $4000 trumpets today do not have as much detail work as a $100 trumpet from 60 years ago! When they have anything they are usualy rolled not actualy engrqaved.I know a guy that has done some pistol and rifle engraveing for me in the past if he is still alive. Truthfully for $1800 on up I think we should get a heck of a lot more then we get in todays trumpet's! In that price range they should at least offer a few very detailed rolled or machined engraveing to choose from.