Bob Reeves Brass Ark trombone mouthpiece for small shank, 11c. I bought this new and used it a few times. When I bought it, there was a slight distortion on the surface that touches the mouth (smooth, likely due to the manufacturing process). I had other new ones brought in to compare, but this one had better sound projection, etc., and I didn't mind the feel against my mouth, so I bought it. (It's said that there's a lot of variation between individual mouthpieces.) Later, I stopped using it because the light weight didn't suit me, but I like the feel, which is like the West Coast sound. (I'm currently using a slightly heavier version of this.) I haven't used it heavily, but there are signs of wear and tear, such as scratches. The photo of the rim is of the distorted area, but it's difficult to capture it well in a photo. It's on the surface of the rim. It doesn't affect the inside. #BrassArk #BobReeves #Trombone #mouthpiece #トロンボーン #マウスピース