Used for a few seconds per song, once. It has been stored for about six months. I received another mute, so I'm hoping someone who can use it will take it while it's still in good condition... Shipping will be via courier in a 60-size box, so please refrain from price negotiations. I will ship it in the original cardboard box it came in (see image, slightly dirty). I don't have any reinforcement materials, so please understand that it will be shipped without any additional reinforcement. This is a 1980 yen mute originally from Sound House, but in my opinion, it worked without any problems or issues. If you purchase multiple items and the shipping cost doesn't change with combined shipping, I can offer a discount on the total amount, so please feel free to inquire. Shipping will be via either Rakuraku Mercari or Yu-Yu Mercari. The following is quoted from the official website: PLAYTECH's straight mute, focusing on price and quality. For trumpets. Standard aluminum. Specifications ■ Mute for trumpet/cornet ■ Straight ■ Aluminum ■ Total length: 14cm ■ Diameter: 9cm