nprofile1qy2hwumn8ghj7un9d3shjtnyd968gmewwp6kyqpqw9hzf7g3kjwg7877u72vq89tzyt6aqkdvln96d295qr5eelqse2qh30y40 (nprofile…0y40) I remember one-sided cranks like this. Not fondly, though.
Looks like the frame is make the same way as Schwinn ones were, using pressed-steel lugs.
At least this one doesn't have the Shimano freewheeling chainwheel that was popular in the mid-70s. Yes, you could change gear while freewheeling, but that was about the sole advantage