Different "Super" circa 1975, but same details (note: not sure if chainstay guard strip was original, was on when I got the bike; I'm the second owner). Raced and ridden for 35 years as a second owner, getting full mechanical period parts refit (orig. parts date coded from 1974).
I would re-evaluate your 1975 assessment, the foil chain slap sticker, the COLNAGO cast top eyes suggest a bit later.
Does the drive side rear dropout have the threaded screw points for the portacatena?