brass lacquered, fully compensated, 4 stainless steel valves hand-lapped, white brass inner and outer slides, bell 300 mm, bore 15 -16.8 mm, with Trigger on main tuning slide, mouthpiece, case - made in Germany 

brass silver-plated, fully compensated, 4 stainless steel valves hand-lapped, white brass inner and outer slides, bell 300 mm, bore 15 -16.8 mm, with Trigger on main tuning slide, mouthpiece, case - made in Germany