- gold brass

- bell
  bell diameter 128 mm, french rim

- bore slides 11,5/11,2 mm

- nickel silver valve group
  bronze valves
  SW4-joints
  spiral-spring-mechanism

- leadpipe interchangeable

- waterkey

- handletrigger mechanism and
  waterkey at 3rd slide

- c-key, venthole

especially:
- undersilver-plated and
  gold-plated

option:
- silver-plated