Playtech Euphonium PTEP-300S This is a 4-piston euphonium. I purchased it 7 years ago. All moving parts function. Overall, there is some dullness, but I think it can be removed with polishing. There are 2-3 dents, about the size seen in the third image, but they do not affect playing. It comes with a mouthpiece and a backpack-style case. Thank you for looking.