Nice shot of RS in conductor mode, probably counting down "take 214-a" while band members glance at the clock, mutter imprecations, and wonder if they'll make last call.
Likely vintage: 1950. Apparently snapped when RS was at the musical helm of Your Hit Parade, which jumped from CBS radio to NBC-TV that year. Clue: haircut (similar to photos of RS leading his 1948-49 quintet; he later sported a crew cut on YHP); suspenders and elegant tie, both of which seem late-1940s/1950 vogue.
HT: Stan Warnow for the scan.