Hoyer single Bb horn 4+1RV

GDR-era Meister Hans Hoyer of Markneukirchen single Bb horn 4+1RV (Stellventil for stopping length)

1. Full view

2. Bell flare

3. Serial #

4. Body view #2

5. Bell engraving

6. Details

7. Tuning slide

8. Back view

9. Valve section view

10. Stellventil - Switch valve

11. Body view

12. Valve section back view