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Double bore .570'' / .660'' = 14.
5 / 16.
8 mm.
Yellow brass bell Ø 11" = 280mm.
Gold brass leadpipe.
Nickel silver outer slides.
4 valves (3 top.
1 side action).
Stainless steel pistons.
Original VINCENT BACH 6 1/2AL mouthpiece and valve oil.
Light weight case with rucksack assembly.
Silver plated finish.