Pre-1919 Josef Glassl of Graslitz C flugelhorn 3RV with a HP-to-LP pigtail

1. Back view

2. Bell flare

3. Adjustable clocksprings

4. Valve section back view

5. Maker';s shield

6. Valve section view

7. Front view

8. Large bow view

9. Valve section view #2

10. HP-to-LP pigtail