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
