Instant purchase OK Neo series. B♭ compensating. Valve system is 4 piston. Bell is yellow brass, 300mm diameter, Bore size is 15mm (1st-3rd) / 16.8mm (4th), silver-plated finish. List price is about 700,000 yen. *Please inquire in the comments regarding shipping. We will take the utmost care to ensure it is transported in good condition. YAMAHA YEP-642S (No mouthpiece, comes with a backpack worth 40,000 yen) Purchased from a musical instrument store about 3 years ago. It has a very soft tone. For my son, who cherishes things, I bought it when he joined the brass band club, but he stopped attending school and it has been unused. Professionally cleaned, I think it has been used less than 10 times. There are a few scratches on the brown case, which may come off with an eraser. It has been stored in a closet due to the lack of performance opportunities during the COVID-19 pandemic. Please feel free to ask if you have any questions or would like photos from specific angles.