This is a ligature plate for Earrs Sax (イヤーズ サックス). It's been stored for a long time, so I believe it's from the early days. The ebonite is size S, so it's for soprano saxophones. ⚫︎ Titanium: 14mm x 30mm ⚫︎ Ebonite: 13mm x 23mm It's a simple and easy-to-use plate that you just insert between the reed and the ligature, allowing you to achieve various acoustic changes. Perceptions may vary, but it changes the tone and playing feel, which is interesting ^_^ You can enjoy the changes without altering your setup, so if you're interested, please give it a try ⭐︎ This item shows signs of use, so we appreciate your understanding before purchasing.