- gold brass

- bell
bell diameter 130 mm,
nickel silver "Heckel" garland
lightweight gauge

- art engraved

- bore slides 11,2 mm

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

- waterkey

- trigger mechanism and
waterkey at 3rd slide

- c-key, venthole

- Heckel S-brace and
handforged brace

- undersilver-plated and
gold-plated
option:
- leadpipe interchangeable