This is a tuba mouthpiece made by Rudolf Meinl, a prestigious German manufacturer. I am selling it because it has been unused. It is relatively clean as it hasn't been used much. Also, I think it's quite rare. There are some scratches on the shank, but they are not very noticeable. When played, the sound becomes thick. Although the size should be normal, it felt like a large mouthpiece. I think this mouthpiece is perfect, especially for B♭ tuba players. The following information is from the website: ・Cup Inner Diameter: 32.7 mm ・Cup Outer Diameter: 47.5 mm ・Bore (Throat Diameter): 8.3 mm