The ad says "transmission" which brings up a point of confusion (to me). I bet y'all can straighten me up.
Was "transmission" an upscale feature?
We had a late 40s Laundromat. No pressure switch; it "weighed" the compression of the bottom leaf spring. White-on-blue knob. Double doors, no boot. The earthquake solenoid banged a lever on the rear of the transmission case for spin.
It got replaced early-mid 50s with a chevron door, WITH boot, WITH pressure switch although no water level knob. White on black timer knob. NO transmission, YES 3-belt intermediate pulley.
But in models later than that, it seems the transmission reappeared, then later still, back to 3 belts.
So, question one: What is the timeline for transmission vs 3 belt? Model specific?
Question two: Besides an apparent planetary gearset, what was inside that transmission that accounted for spin startup without dogging the motor down? Fluid coupling? Do you know the failure mode when it quit (like ours did)?