This is an alto horn in the American parlance. If it were British, it would be called a tenor horn. The date would make this a Conn 16C. After WW2, the Conn Alto horns were mostly combo Eb/F so that they could play older Eb parts and French Horn parts w/o transposition.
The front valve/bell front Conn 22C alto horn my older brother used in the early 60s for marching band came with a french horn mouthpiece adapter which he used with the shorter F tuning slide.
Doug
Last edited by daruby; 07-24-2020 at 12:21 PM.
Adams E3 0.60 Sterling bell - Prototype top sprung valves
Concord Band
Winchendon Winds
Townsend Military Band