Total maintenance completed: YAMAHA YCL851Ⅱ Custom CX Made of Grenadilla Serial number 006××× No cracks or repairs Accessories: YAMAHA genuine hard case YCL 851Ⅱ Custom CX YAMAHA clarinet B♭ professional model. YAMAHA, which 본격적으로 started developing clarinets in the 1970s, is a confident product. This top-of-the-line Custom series consists of three models: CS, CX, and SE. The CX adopts the inner diameter of the Custom CS and uses ABS resin for the tone holes, enabling a vivid response and a bright, rich, and soft sound. The chalumeau register is particularly rich. Therefore, this CX became very popular and solidified YAMAHA's reputation. About maintenance: 1. Body tone hole cleaning and oiling. 2. Complete pad replacement. 3. Spring cork inspection and partial replacement. 4. Key distortion correction and polishing. 5. Ring height adjustment. 6. Pad gap adjustment. 7. F1 (upper and lower joint connection) adjustment. 8. Lower joint CB connection adjustment. 9. Overall balance adjustment, fine-tuning. 10. Full range test play confirmation. Thoroughly tested. The adjustment is perfectly finished. There is no aging degradation at all. The sound is very wonderful. The airflow is good, and the instrument is in the best condition. I think it's a great bargain. It can be said that it is a masterpiece itself. I am a clarinetist with 57 years of professional experience and not a repairman. I learned本格的に repair from a Crampon technician when I was young. After retiring from the orchestra, I performed in New York and Berlin. I have released three CDs and held many solo concerts. I have participated in countless recordings and broadcasts. The fourth corner of my clarinet life! I hope to be of help to enthusiasts. This Custom CX! No signs of use. YAMAHA's confident product. Please experience this clear sound. Thank you for viewing.