Clarinet B♭ YAMAHA 450 Fully Serviced Tested and confirmed. Beautiful condition, excellent sound. Made of Grenadilla wood. Serial number 303××× No cracks, chips, or repair history. Accessories: YAMAHA genuine semi-hard case Mouthpiece: YAMAHA genuine 4C Genuine ligature and cap. YCL450 The top-of-the-line model in the YAMAHA College series. Features the same narrow bore as the renowned Custom CS, offering a vibrant response, bright tone, and rich resonance. After reviewing clarinets from around the world (excluding German models), this YAMAHA stands out in the college model category. 1. Precise and meticulous design and manufacturing. 2. Consistent quality and stability. 3. Excellent durability. 4. Superior sound quality, volume, and intonation. 5. Natural and unadulterated finish in all aspects. You can feel the excellence of Japan's precise and meticulous technology. Maintenance: 1. Body tone hole cleaning and oiling. 2. Complete pad replacement. 3. Key distortion correction and polishing. 4. Spring cork inspection and partial replacement. 5. Ring height adjustment. 6. Pad opening adjustment. 7. F1 (upper and lower joint connection) adjustment. 8. Lower joint CB connection adjustment. 9. Overall balance adjustment and fine-tuning. 10. Full range play test confirmation. The instrument is in perfect condition. I am a clarinetist with 57 years of professional experience, but I am not a repairman. However, I have never sent my instruments for repair. I do everything myself! I am asked to repair instruments by my professional colleagues. I learned the basics of repair from a Buffet Crampon technician when I was young. After retiring from the orchestra, I performed around the world. Along with my performance activities, I was involved in the development of new YAMAHA products and served as an inspection player for major musical instrument stores. The fourth corner of my clarinet life! I hope this will be helpful for those starting out. YCL450 Produces a mellow and powerful sound. Includes the original case cover and the classic French mouthpiece Vandoren 5RV. NICE! Perfect for school club use! A masterpiece that I can confidently recommend. Thank you for viewing.