This is a Schmidt mouthpiece, model 8. The shank is American. Inner rim diameter: 17.5mm Cup: Normal Throat: 4.1mm Retail price: 15,400 yen I purchased and used this about 3 years ago. There are no scratches or dents, but I think it shows some signs of use. As there was no box when I bought it, I will ship it in bubble wrap. I can send more detailed photos if needed. Thank you.