Other Top Loaders w/window?
It's good to know I wasn't imagining things; in the mid 50's I
remember going to the home of a neighbors daughter and her kitchen had an in counter unit. I don't remember if there was metal cabinet front, but it had a round window for sure. I have a fairly vivid recollection that I was intrigued by what seemed to be the impellar; it seemed quite substantial, almost as large as the bottom of the tub, looked kind of turbiney. Since I was only seven I was too timid to get too pushy about if I could see it swirl. Of course brand names weren't part of my research at that age!