This is the Yamaha signature model, the Shiro Ide Model 1, Inner GP specification. There are no noticeable scratches, but there are some insertion marks on the shank. The following information is provided: Shiro Ide Model 1: HR-IDE (Special Production) Inner GP Manufacturer's Suggested Retail Price: ¥14,850 It has a standard depth U-cup shape with a medium throat diameter, a thin and flexible rim. Also, the cup is relatively thick, allowing for efficient sound production. This mouthpiece is especially easy to control in the high register and is ideal for instruments with a narrow bell. Rim Inner Diameter: 17.43mm Throat Diameter: 4.09mm Returns are not accepted. Thank you. Horn French Horn Mouthpiece