Purchased this July. I play the trombone and bought this used to use as a secondary instrument. It has a light feel when blowing, and I got the impression that it had a wide range and was easy to hit the notes. Furthermore, I had the impression that it was relatively easy to produce a core sound. However, I found that I had extra power when playing it, and I will be getting another model with a compensating system, so I am selling this to raise funds. I actually used it about 10 times, including once for this year's brass band competition and once for an outdoor performance. There are no problems with the movement of the tuning slides or the pistons themselves. In September, I had the springs, valve guides, and a set of felts replaced at a musical instrument store. I will include the original 51L and a Bach 5G mouthpiece. According to the serial number and the previous owner's information, it seems to have been manufactured around 2006. There are some dullness in the plating, polishing scratches, and scratches, as well as several dents that are visible. (I have marked the areas that are difficult to see in the photos.) The leather on the handle of the hard case, which is common for instruments of this age, is slightly peeling, but there is no pain when holding it. The instrument itself is relatively lightweight and is also a model that is easy for beginners to play, so I am including a tuner as a bonus. I will answer any questions you may have to the best of my ability. Please consider purchasing this as a used item. [Brand] YAMAHA [Category] Euphonium [Condition] Has scratches and dents B♭. The valve system is 4-piston. The bell is yellow brass, 280mm in diameter, with a bore size of 14.5mm (1st to 3rd) / 16.8mm (4th), and a silver-plated finish. "A low range that envelops you with exceptional power. It responds to the music the player envisions with a rich sound. Expressive power that can be used for a wide range of music, from British-style brass bands to concert band sounds. A thick and full low range and a clear, well-defined sound. It achieves a comfortable resistance and flexible control. Accurate intonation, including the 6th overtone F. Furthermore, it supports the player with excellent operability. A Yamaha euphonium that fully expresses the player's thoughts. YEP-621S with a side-action 4th piston." - Type of instrument: Euphonium - Material: Metal - Color: Silver - Accessories: With case - Number of valves: 4