Technical description: Silver-plated brass; 3 valves. Water-key on main tuning-slide. Valve type: 3 Périnet valves, bottom sprung; alignment by key on piston; silver-plated pistons. Repair History: One leg of 2nd v.t.s. a replacement. Converted from Old Philharmonic pitch to low pitch by extending main tuning-slide, adding c 152mm to air column length.