This is a Yamaha mouthpiece for large bore trombones. The rim is gold-plated, and the body is silver-plated. This is a standard model and a popular choice for producing a powerful, thick sound. It should perform well in concert bands, orchestras, and ensembles. There is some evidence of use. There are no major scratches or dents, and it is fully functional. This is for large bore trombones and cannot be used with small bore instruments. It can of course be used with instruments like Bach and Conn. Please note that this is a used item and is sold as-is, with no returns. It will be shipped via Takkyubin Compact the day after payment is received. Thank you.