Atelier Momo Euphonium Mouthpiece MO52E. Inner gold, large shank, for tenor trombone, and a euphonium mouthpiece case. The case can hold 3 mouthpieces. It looks bright in the photo, but it's a dark blue color. There are scratches on the shank and some dirt on the inner diameter, but there are no major scratches, damage, or dents. There is also some blackening, so please refrain from purchasing if you are concerned. There are no problems with the sound. The mouthpiece does not come with a box. It will be placed in the mouthpiece case, wrapped in cushioning material, and shipped in a Mercari compact box. Thank you for your understanding. 52E: Cup inner diameter 25.8mm, deep, slightly larger diameter for a wider range of sound. Thank you.