This photograph just emerged on eBay — and although the seller has correctly identified the star as cornetist Rex Stewart, no other details are forthcoming. I don’t recognize the bassist or the drummer, and don’t feel secure enough about historically placing men’s fashion to say, “Oh, that suit is from 1947 . . . thus this was taken in France.” Rex appears much younger than the lean man we see in THE SOUND OF JAZZ (1957), but that doesn’t help us pinpoint a year in any way.
Do any of my astute readers have suggestions to offer? It’s a fine picture of Rex — looking sideways, as if suspicious, as he often did. Yes, his suit pulls a bit across the front (a tailor could have moved that button) but it’s a good man’s fault). Educated guesses welcome!
JAZZ LIVES 
Actually 1947 might be a good bet! (At least from the way the suit looks).
I’m guessing George Duvivier as the bassist; no guess for the drummer.
Cheers,
Chris Tyle
Also looks like George Duvivier to me.
In my 1947-48 senior year in high school I proudly wore a similar rolled-collar, single-button, double-breasted, chalk-striped suit (right off the steel pipe racks at Robert Hall Clothiers.) Cardigan sport jackets were also big that year.