Hellmut Seifert K. M. Stadt (Karl-Marx-Stadt - previously and now again Chemnitz) trombone 0 or 1RV in two exchangeable tuning slides

1. Bell view

2. Tuning slide with F-valve

3. Mouthpiece view #2

4. Slide bow guard

5. Bell flare

6. Bow guard

7. Handgrip area

8. F-valve mounted

9. Slide view

10. Tuning slides

11. In the case

12. Valve mechanism view

13. Bell engraving

14. Mouthpiece view