Clarinet B♭ YAMAHA 450 Fully Serviced Tested and confirmed. Excellent condition, plays beautifully. Made of Grenadilla wood. Serial number 314××× No cracks, chips, or repair history. Accessories: YAMAHA genuine hard case Original case cover with strap Mouthpiece: YAMAHA genuine 4C Original ligature and cap. YCL450 The top model of the YAMAHA college series. Features the same slender inner bore as the renowned Custom CS, offering a vibrant response and bright, resonant sound. After examining clarinets from around the world (excluding German systems), YAMAHA stands out in the college model category. 1. Meticulous design and manufacturing. 2. Consistent quality and stability. 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: 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 not a repairman. However, I have never had my instruments repaired. I do everything myself! I am asked to repair instruments by my professional colleagues. I learned本格的に 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. The included genuine mouthpiece is also in good condition, producing a mellow and powerful sound. The case cover with strap is convenient and stylish. NICE! Perfect for club activities! This is a gem that I can confidently recommend. Thank you for viewing.