Yamaha 51C4 trombone/euphonium mouthpiece, for small shanks. I mainly used this with a euphonium. There are no noticeable deformations, but it is a used item, so there are some minor scratches. There is no outer box. Please check the images. Personally, I think it can still be used actively! [Reference] Mouthpiece, silver-plated finish, small shank Inner rim diameter: 25.23 Throat diameter: 6.92 It has a slightly shallower cup than the 51, allowing for powerful playing at high volumes. With a rich sound across the entire range, it is suitable for symphony orchestra players. This item has been stored at home for a long time. Please forgive any small oversights. Returns and cancellations are not accepted. Please bid with understanding. *** Please Note *** ⚫︎ This is a layman's inspection. There may be measurement errors, stains, scratches, and other minor oversights. ⚫︎ Shipping will be done using a method with compensation as much as possible. Depending on the packaging and shipping costs, it may be changed to a method without compensation, but we cannot be held responsible for troubles such as damage or non-arrival. ⚫︎ Depending on the size of the package, the shipping method may be changed from Rakuraku Mercari Bin to Yu-Yu Mercari Bin, or to regular mail. Please let us know if you have a preferred shipping method. ⚫︎ We try to respond to comments and ship items as quickly as possible, but there may be delays due to work, etc. ⚫︎ Cancellations and returns are not accepted after purchase. Please refrain from purchasing if you have any concerns. ⚫︎ If you have any other questions, please ask in the comments section. Thank you for your understanding.