New Stone Lined A cup mute for tenor and tenor-bass trombones from NEW STONE LINED. In my subjective opinion, it's in beautiful condition. The cork is also in good condition. Please check the photos. [Product Description] Since its founding in 1935, New Stone Lined mutes have supported the golden age of big bands, stimulated the imaginations of various musicians, and continued to captivate audiences. They hold an overwhelming share in the jazz world and studios. They are also a standard in wind bands, and are extremely popular as the ultimate classic mutes. Using New Stone Lined's unique fiber material, these mutes can be used in any genre. This is a classic model that provides a rich muted sound. It can be used for both solo and ensemble performances. Thank you.