This one is a bit of a mystery to me, it looks like an early Conn 16M (‘Shooting Stars’), but it is engraved as ‘Benetone’, bare brass with nickel keys. It seems to have been played a fair bit, and I can see why – it’s a real player with a deep ‘gutsy’ sound. Plays really well with a Rico Metalite. It does not have the detailing of a pro horn, and the ergonomics are not as slick on more modern horns, but it still is a joy to play with spot-on, locking intonation. Bell keys are on the left side. Serial 27xxx. Wire keyguards.
If you have more information about this horn, perhaps the exact year, or for whom it was built as a stencil, please leave a comment.