Retail price: 17,050 yen (tax included) This is a Silky 15 trumpet mouthpiece. It's a standard model for brass bands. The inner diameter is about the same as a Bach 1 1/4C. If you don't need the case, I'll offer a discount, so please let me know. If you'd like to see any specific areas in more detail, please contact me. I will add photos. It has been cleaned and will be shipped wrapped in bubble wrap. #Trumpet #Mouthpiece #1C #BrassBand #Orchestra