This is a metal tenor saxophone mouthpiece, an Otto Link Super Tone Master. This mouthpiece is marked "super," which makes it popular as a vintage piece. It has a 6☆ tip opening, offers a moderate buzz, and feels very good to play. I purchased it used about a year ago and have used it for a year. I used it for jazz, and it's a fantastic mouthpiece that allows you to fully enjoy the jazz tone. As it's an older model, it has a vintage feel and a rich tone, with excellent response. It's a very good piece. However, I am selling it to raise funds to purchase a mouthpiece with a wider tip opening. Regarding the condition, there are tooth marks, so please refer to the photos. The case, ligature, and cap are also included.