- oscar adler logo on bell
- Oscar Adler Straight Bb Soprano
- Oscar Aldler Triumph ad (1930)
- rear view
- rear view
- rear view lower lower portion
- rear view lower portion
- rear view lower portion
- rear view upper portion
- rear view upper portion
- rear view with accessories
- rear-view-lower-portion
- rear-view-mid-section
- righ palm keys