Clarinet B♭ YAMAHA 450 Fully Serviced Tested and confirmed. Superb condition, excellent sound. Made of Grenadilla wood. Serial number 133××× No cracks, chips, or repair history. Accessories: Semi-hard case J.X with strap Mouthpiece: YAMAHA genuine 4C Genuine ligature and cap. YCL450 The top model of the YAMAHA college series. Features the same narrow bore as the famous Custom CS, known for its bright response and clear sound. After examining clarinets worldwide (excluding German models), YAMAHA stands out in the college model category. 1. Careful design and manufacturing. 2. Uniform and stable quality. 3. Excellent durability. 4. Superior sound quality, volume, and intonation. 5. Natural and straightforward in all aspects. I am proud of the excellence of Japanese technology. Maintenance details: 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 test play confirmation. The instrument is in perfect condition. I am a clarinetist with 57 years of professional experience, but not a repairman. However, I have never had my instruments repaired by others. I do everything myself! I am asked to repair instruments by my professional colleagues. I learned本格的に (本格的に - literally "full-scale") repair from a Buffet Crampon technician when I was young. After retiring from the orchestra, I performed worldwide. 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. The included genuine mouthpiece is also in good condition, producing a mellow and powerful sound. The semi-hard case J.X is light and durable. Stylish. NICE! Perfect for club activities! This is a gem that I can confidently recommend. Thank you for viewing.