Brass Lab. MOMO trombone mouthpiece "51W☆". I was using it on euphonium. My impression is that it's a straightforward mouthpiece. It has the simplicity of a standard Bach mouthpiece when you first play it, and the pleasant resonance that is characteristic of MOMO. Plating: Silver / Inner Gold Cup Inner Diameter: 25.5 Cup Depth: deep Throat Diameter: 7.0 Shank: Large shank ※Equivalent to Bach 5G New Reference Price: 62,700 yen I think there are no other damages except for shank marks, but please consider this with the understanding that it has been used. (Formerly: Atelier MOMO / Atelier Momo)