- Bore .504″ – .531″ bore = 12,8 – 13,5mm
- Yellow brass bell: Ø 8 3/8″ = 211mm
- Gold brass leadpipe
- Nickel silver outer slides
- 3 top-action valves
- Stainless steel pistons
- Original VINCENT BACH 12C mouthpiece and valve oil
- Light weight case with rucksack assembly
- Silver plated finish