This is the SM4X mouthpiece, supervised by Mr. Steven Mead. It was used by a music college student, so it has a well-developed sound. It was used for about 2 years, so there are some black marks, but it has been thoroughly polished. It's a rare item currently sold new for 35,200 yen. No box included. It will be carefully packed for shipping. Silver-plated finish, large shank. Price reduced to the limit on 2025/4/5.