Owch!!
In the Mood?? Yipes why did I click on it? How could you do this to me, on a Sunday morning? Geez, I haven't even had breakfast yet.
It hard to tell, but, it could be that they are ALL playing Martins.
Sometimes, back then, a leader would get a endorsement deal and the stipulation was EVERYONE in the band had to play that brand. (an old guy that played in the big bands told me that, once) Its kinda like a, how, nowdays, a college basketball coach gets a deal with a sneaker company & the whole team wears that sneaker.
Its funny, when you think of how much people take equipment so seriously these days, and HAVE to play a certain horn, mpc, etc.
It could be, if you look at the tenors trading, they all look like the same horn--its hard to tell without close-ups