Acorn House is on LTG and posted the pic on LTG. See my response
here.
Short answer - Roger Daltry and John Entwistle circa 1967. The bass is most likely a '66 and Acorn House thought Daltry's hair suggested 1967. Entwistle had a stereo 1974 Starfire II. A subsequent owner suggested that it was purchased, in part because it was like an instrument he had played early in his career. Link to that is in my other post.