YAMAHA Yamaha Trumpet Mouthpiece Bobby Shew JAZZ GP Gold Plated This is a mouthpiece from Yamaha, a standard trumpet manufacturer. It is gold-plated, and there is no peeling or thinning of the plating. I think it's in good condition. It's similar in feel to a Bach 3C. Although it says JAZZ, I think it's a very versatile mouthpiece that can be used without any problems in pop music, as well as in brass bands and classical music. There are a few dents and scratches on the rim side, but there are no noticeable scratches. Rim Inner Diameter: 16.85mm Throat Diameter: 3.65mm