Yoikes!
This model I remember.
It was Sears' answer to the GE Versatronic.
Having a fair amount of familiarity with Sears' ranges of that period, I can only say this:
You don't want it.
It wasn't exactly world-class when it was new, it was not as substantial as other brands and if you need parts for it, what's left of Sears will laugh at you.