- Schilke - Trumpet Mouthpiece - 12B4 (Similar to a Bach 6C) Retail Price: Approximately 12,000 yen Comes with box and zipper case. Used for about six months in high school. I'm selling it now because I've switched to a different one. This size is suitable for both experienced musicians and beginners. It has been cleaned, disinfected, and the tarnish has been removed, so it's quite clean. I will thoroughly clean and disinfect it again before shipping. Immediate purchase is OK. Price reduction is not possible. Please let me know in the comments if you have any questions.