Besson 765 euphonium 3+1P non-compensating

1. Full view #2

2. Slides’ view

3. Side view

4. Mouthpiece view #2

5. Full view #1

6. 4th piston lock activated

7. Valve section back view

8. Bell engraving

9. Mouthpiece view #1

10. 4th piston lock open