1925 Holton Revelation trombone

1. Maker’s shield on the case

2. Bell engraving

3. Bell flare

4. Handgrip area

5. Full view

6. Water key

7. Lyre arm (wrongly mounted)

8. Gooseneck view

9. A stay and balancer view

10. Balancer

11. In the case

12. Bell engraving view #2