Hello! This is a used Olds No. 5 trumpet mouthpiece. It is missing some plating on it, which you can see in the pictures provided. While I am not a trumpet player professionally, I have tooted around on it a bit and it is enjoyable to play. I am unsure what it exactly compares to (like a Bach 5C, 7C, etc), but if I find out I will update this description. It is being sold as-is, so no returns. Please let me know if you have any questions. Thanks!