This is a YAMAHA YEP 321 euphonium. Unlike the entry-level 201 model, this one has a fourth valve. The new price is 330,000 yen. I am switching to trombone and no longer need this, so I am putting it up for sale. The inside of the instrument has been completely disassembled and cleaned. A YAMAHA 48 mouthpiece is also included. The condition is such that there is no deterioration that would hinder playing, and it produces a very good sound with stable intonation. However, there are scratches on the lower part of the body and the 4th valve slide (see attached images). There are also some other minor scratches, but please understand that this is a used item. For those who are starting to play the euphonium, I think it would be better to start with this one, which also has a fourth valve. Thank you. The following is a quote from the YAMAHA website: https://jp.yamaha.com/products/musical_instruments/winds/euphoniums/yep-321/index.html YEP-321 Low range that envelops you with exceptional power. Responds to the music the player envisions with a rich sound. Expressiveness that can be played widely, from British-style brass bands to concert band sounds. Thick and rich low range and a clear, well-defined sound. Achieves a comfortable resistance and flexible control. B♭. The valve system is 4-piston. The bell is yellow brass, 280mm in diameter, and the bore size is 14.5mm (1st to 3rd) / 15.5mm (4th), with a clear lacquer finish.