Wow, thank you for the quick responses! I will keep an eye on the forum.

Good morning, and thank you for adding me. I found this forum as I was searching for the value of my Besson baritone, silver, 3+1 valves (serial #101133, about 1915). I came across an old post from someone looking for an 'enharmonic' baritone, and realized that it matched what I have. I'm presuming ...