I had bought that washer when I had my first apartment. It was approximately 1979 when I bought it. Did not have the matching dryer, though.
It had no agitator, but (as Laundress says) a spin plate type impeller in the bottom, somewhat like the one in a Hoover portable washer. It held a surprising large amount for a portable machined but...
Mine washed, drained and then went to deep rinse with no spin in-between. So needless to say it was a poor rinser, at least by my standards. It did have a final spin. I can't recall through if there were spray rinses during this spin, it seems that there were. Even so, I do remember having to repeatedly run clothes through multiple cycles to get the suds out, and by this time they were tangled up pretty well.
Still I thought it was a cool little machine, attractive looking, and it had a neat sound to it. As I recall, GE's manufacturing label indicated it was made in Japan.
It would be a great little machine to have in one's garage to wash and spin out grease rags, chamoises, etc. If any one you live in the vicinity, I would grab it!