August Knopf compensating double horn 5R

Migma (one of the GDR state conglomerates

1. Valve section back view

2. Paddle back view

3. Full view

4. Bell engraving view #2

5. Body back view

6. Body view

7. Bell engraving view #1

8. Bell flare

9. Back view

10. Valve section view

11. Leadpipe view

12. Disassembled