Hi you're looking at a three Valve silver Baritone Horn model name ' The Triumph' , Manufactured by the Salvation Army.
It's got a nice worn look but plays well could do with a good service.
Mouthpiece is a Yamaha 42.
Height is 65cm, width 22cm & bell width 24.5cm. It will come with a case that will need a new strap otherwise is strong.
Just changed listening as I listed as Euphonium.
Please look at all photos and ask any questions