The bike in the flicker set looks to be a nice mid level bike from the days when everything was lugged. Can't tell much of anything from your pics other than it looks like your bike is set up for regular canti instead of centerpull brakes. If your frame weighs 7 pounds, then it is an entry level model.
It's worth noting that there were a lot of variances in brake specs in the 70's and early 80's. So just because it has canti studs doesn't mean a modern canti brake will work, plus there's the whole 27" wheel thing....