Used Boosey & Hawkes Imperial euphonium (SN:489859) in satin silver with hard-shell case.  11" upright bell and 3+1 compensating pistons of .580/.650" bore.  Takes medium shank mouthpiece.  Minor dings and scratches as can be expected.  You can still see where a bell crease was once rolled out.  No pitting in the pistons but the 4th piston was replaced with a newer version that has the black disck shaped guide.