Thank you for viewing. This is a YAMAHA euphonium mouthpiece, SHSPECIAL. It's the Shoichiro Hagiwara model. It is no longer sold. It has been gold-plated after purchase. It has been stored by a private individual and shows signs of use. There are marks from insertion into the mouthpiece receiver. Please contact me if you have any other questions. I am also listing this on other sites, so I may remove the listing.