Model #5706
Technical Specifications:
Bore: M (11,43mm/0.450")
Bell: #18 (97mm/3.81")
Bell material: Yellow brass
Leadpipes: #8 & #9A
Valves material: Monel
Valves section: Yellow brass
Trim kit: Gold plated
Finish: silver plated 1000 thousandth
Model #5781
Technical Specifications:
Bore: M (11,43mm/0.450")
Bells: #18 (97mm/3.81")
Bells material: Bellflex gold plated & Copper silver plated
Leadpipes: #8 & #9A
Valves material: Monel
Valves section: Yellow brass
Trim kit: Gold plated
Fourth valve tone slide included
Finish: silver plated 1000 thousandth
Model #5720 (Bellflex) / Model #5721 (Cooper)
Technical Specifications::
Bore: M (11,43mm/0.450")
Bells: #18 (97mm/3.81")
Bell material: Bellflex
Leadpipes: #8 & #9A
Valves material: Monel
Valves section: Yellow brass
Trim kit: Nickel silver
Finger buttons: Onyx
Fourth valve tone slide included
Finish: silver plated 1000 thousandth
