Large Lead Pipe

Standard Construction
Three Piston-Valves ( Yellow Brass-Monel metal )
Nylon guides
Enclosed bronze springs
Ring and stop on third slide
Third slide to take of with double-slide
Waterkey at main-tuning slide
Inner-and outer slides in nickel silver
Valve section in yellow brass

Material Choice
Yellow-brass (Ms)
Gold-brass (Gms) ( regarding of bell, main tuning-slide and leadpipe )

Surface-Quality
Silver plated
Gold plated
Material raw polish