This is a mouthpiece from Courtois that I received previously. Since I am not a player, I do not know the size or how it feels to play. I was told it was for a cornet, but I haven't actually used it, so I'm not sure if it's really for a cornet. It might be for a flugelhorn. If it's for a cornet, I think it's a long-type mouthpiece. The cup is quite deep. Please determine the type based on the shape and model number. I think it is perfectly usable, but it is old, so there are some stains and scratches. Please refrain from purchasing if you are sensitive to these issues or if you are looking for a pristine item. Regarding this item, no claims and no returns are accepted.