Large Shank Yamaha Peter Sullivan mouthpiece. Came with a trombone I bought a while bak. I have no need for it as I'm happy with current mouthpieces.. There's a small indentation on the outside of the rim shown in the left in the photo, otherwise just some insertion marks.

$40 shipped CONUS

Photos: [url]https://photos.app.goo.gl/BbpykpWb2aofmGvQA