The plastic/polymer tub is the giveaway; it's definitely a WCI product! And the shape of the lid should have been the other clue for me.
Depending on the age, it may spin-drain! My 1987 Frigidaire TL'er was a spin-drain. It also had the circular fill, which was fun. Not great for rollover, though.
Don't know when they switched over, but the Frigi TL'er I purchased in 2006 (which was actually assembled in May of '05) has a boring neutral drain. But the rollover is better.
I used to be a WCI-hater, mostly because of their hate-crime against Frigidaire, but I've mellowed over time and think it would be great fun to have a circa-1980-1987 WCI machine.