casanewt , what's the beginning of your serial number? Mine's an '81, I presume, serial D1Bxxxx. It's 022 frame/fork, horizontal top-tube, fork looks more like
niliraga 's. Has the same Suntour power shifters as yours, but LePree derailleurs, including a three-pulley rear.
No overall photos at the moment, just the detail of the cool seat tube label and head badge: