JBS bass trombone with two in-line RV

Jillich - Böpple - Sound (JBS) of Stuttgart - Germany - bass trombone with two in-line rotary valves

Oct 14, 2009

1. Valve levers

2. Slide engraving

3. Bell section

4. Valves

5. Jillich - Böpple - Sound (JBS) of Stuttgart - Germany - bass trombone with two in-line rotary valves. The bell diameter is 23.7 cm. The bore is 14.89 mm