Kanstul Chicago Bb trumpet 3P and 2 triggers

1. Valve section view

2. Serial #

3. Water key

4. Right side view

5. Disassembled

6. 1st slide trigger view

7. Leadpipe view

8. Left side view

9. Model engraving

10. Pistons

11. Valve buttons view

12. 3rd slide trigger view