Perviance 4⭐︎D4 Trumpet Mouthpiece Likely a reproduction of a Bob Reeves model. This is a well-known masterpiece mouthpiece. I've heard that studio musicians of the past all used this model. The tone and feel certainly make sense. Sleeve processed. Includes a #3 sleeve. With the #3, there's a bit more resistance, making it easier to create a "catch," and I felt it made high notes easier to hit than with the standard shank (#4). (This is just my personal impression.) Including the mouthpiece itself, processing, and the sleeve, it would cost over 30,000 yen. This is a used item, so please refrain from purchasing if you are sensitive to such things or have any concerns.