Date: 1938. (Drawing)
What Pan American said in 1938:
You'll find no better Euphonium than this model at any price. Its rich, resonant tone, easy blowing qualities, quick responsiveness, convenient front bell and side action, graceful design and even scale have won wide acclaim for it in all fields. Bb (larger bore than baritone horn), sturdily constructed and fully factory guaranteed. Well balanced for easy handling in concert work or on the march. Beautifully finished with generous burnishing. Height, 30½"; bell, 11".