This is a nice Early Babbitt vintage Otto Link alto sax mouthpiece. The Early Babbitt Tone Edge mouthpieces are fantastic vintage Links, and this one has a really nice, dark sound. There is a lot of body to the sound, and it plays even from top to bottom. The mouthpiece is marked a 5*, but has some work done to it. It still measure right at .073" which is just right. It looks like whoever did the work just evened up the rails, and that's about it.