Besson BE164-2 Student Bb Euphonium, "New Standard", hand made yellow brass bell, bore size: .579" (14,72mm), 4 perinet valves - one row, bell Ø 11" (279mm), goldbrass leadpipe, nickelsilver outerslides, stainless steel valves, 2 waterkeys, silver plated, incl. case, mouthpiece and accessories