Kurt Knoth slide trombone 1RV - RINO brand from the GDR-era Conglomerate of Migma

1. All of it

2. Valve trigger

3. Odd view

4. All of it view #2

5. Bell engraving

6. Valve section view

7. Bell view

8. Tuning slide pulled

9. Valve section right side

10. Balancer plate

11. Valve sectione left side