It's the Positron FFS system. Unfortunately one of those landed in my lap earlier this summer, luckily very cheap, Ladies step thru frame '82 or '83 World Tourist. I stripped all that stuff out put a new 5spd free wheel on the rear, low end Shimano square taper BB, cheap crankset, a beat up old RD, and some friction thumb shifters I was going to use on a different project that took a different direction. Spray bombed it metalic green. Why? I don't know, it is a relatively lighter frame than a '70's Suburban, Collegiate or Varsity model. Thing is riding slicker than snot, it's my goto beach crusier for the time being. Even went to the local skate shop looking for a Frankenstein type graphic sticker for Frankenbike, but came away with an Alien Workshop sticker I slapped on the downtube and a Scott Harris(?) sticker for the head tube............. it seemed appropriate...

Yes it did happen.....