I've played one of those exact horns. It was a 1917 Conn bari. But this one I think came from use at West Point as it had a military stamp on it and I know the owner went there. What a great sound, but you needed a big chamber mouthpiece to play in tune. I'll bet yours only went to high Eb too.I had a 1917 Conn bari I picked at a used typewriter shop for $50 when I was 19 (45 years ago). It had "USN" etched below the serial number - obviously a navy horn.I used it as a second horn to march with in college band. It was sort of a pea shooter compared to my relatively new SDA bari. I sold it several years after I graduated for a couple hundred bucks. I'd love to have that horn now. The foolishness of youth.