Great trombone/euphonium mouthpiece Like the 4AL but with a modified backbore. Rich tone with improved high register. Has had heavy use but in a very fair condition as you can see. It has a few of the usual scratches and marks. I’ve cleaned as best as I can. It has a small chip on the rim but it’s been like that for a while and it hasn’t effected playing. Message me if any questions. Thanks