Thank you for viewing. Please feel free to negotiate the price or ask any questions. C.S.Willson CS231GB This is a Wilson, a well-known euphonium manufacturer. (Reference: Current new price approx. 1.7 million yen) American shank. I am selling it now that I have finished the year-end performance. During the concert, a current professional player who is a junior colleague on the same stage tried it out, and I received confirmation that the tone, intonation, and condition were very good. A reliable repairman has performed a full tube cleaning, rotary adjustment, dent removal in as many places as possible, soldering in three places (it came off twice during practice, for a total of five places). The hexagonal screw on the thumb rotary part has been replaced, and the condition has improved significantly compared to when it was purchased (I also spent a considerable amount of money). It is ready to play immediately. * The screw for adjusting the angle of the thumb lever had completely stripped threads when purchased, so it has been replaced by the repairman. * The case is not the manufacturer's original. Below are quotes from the previous owner's comments, marked with ●↓↓↓↓↓↓ ● I have played it across four octaves, from high F to pedal F. I believe it is easy to play from high to low notes. ● Due to the Geyer wrap and Wilson's unique ROTAX rotary technology, the airflow is very smooth. ● I think the tone combines the warmth of gold brass and the clarity of nickel silver. It has been used in various situations, from a powerful forte to a warm, enveloping tone. Points to note ● From the initial state, the main tuning slide does not go in completely. It does not seem to affect the performance. (I confirmed with a musical instrument store, and it doesn't seem to be a problem with swapping with other tubes, and ● there is an insert tube inside the main tuning slide that is said to have the effect of clarifying the sound's resonance. Personally, I did find it better, so I left it as is. (Please remove it if you don't need it) ● It is carefully handcrafted one by one by elite craftsmen in a quiet town surrounded by nature in Switzerland. The rotary valve uses ROTAX rotary, which minimizes air loss and achieves smooth airflow. Unfortunately, trial playing seems to be prohibited by Mercari's regulations. Feel free to negotiate the price!