I believe the shifters in this photo are identical to the ones on I used for my bike. (Note the blue cable housing on this bike.)
This photo is from page 56 of the Premier Issue (July 1983) of Winning magazine. The date of the photo is not given.
This a close-up of the photo above. (By the way, the bike is a Colnago. It is hard to see in this photo, but in the original magazine photo, I can see a hole in the front of the fork crown, in typical Colnago style of the very early 70's. Also, the brake levers have a Colnago club pantographed on them.)