Yamaha YEP-321 Euphonium

This is a Yamaha euphonium.
YEP-321

This is a common instrument often found as equipment in brass bands.
There is lacquer peeling, rust, and minor scratches. The valves are not stuck, but one piston is malfunctioning and requires repair. There are 4 pistons. As this is outside my area of expertise, I cannot provide detailed information. Please judge from the photos.

Please consider this a junk item.
Shipping is included.

Thank you for your consideration.