August Knopf single Bb horn 6RV

Very similar to models from Hoyer.

1. Full view

2. Front view

3. In the case

4. Back view

5. Body view

6. Body back view

7. Valve section view

8. Valve section back view

9. Stellventil front view

10. Stellventil back view

11. Disassembled

12. Bell engraving