This is a Buffet Crampon ICON series cornet mouthpiece, model 3B. It came with a Besson Prestige cornet I purchased this year. I'm selling it because I already have a mouthpiece that suits me. I only inserted it into the instrument once to try it out, so there are almost no scratches around the shank, and no scratches around the rim. It was originally in a ziplock bag as shown in the image, but I plan to package it more carefully and ship it via Takkyubin Compact. The cup has a good weight to it, and it gives a bright sound with a low center of gravity. I think it's a good mouthpiece for playing in front. The following sizes are quoted from the Teleman Gakki website (mm) for reference: Inner Rim Diameter: 17.10 Rim Width: 4.75 Throat Diameter: 4.20 Cup Depth: 16.00