Not only is that an unusual ad, but that's an unusual model. I'd guess it at 1967 given the straight-vane mini basket, but that font was hardly every used on their control panels. It seems to read WA550L but it's hard to see.
Too bad it has the hot wash with warm rinse combined option only, if I was the manufacturer I would have put all the rinses on cold, you can always run a prewash/soak cycle or a shorted wash cycle on warm and then run it on spin if you want a warm rinse then........just my opinion......