Per pics 6 and 8 the washer has two agitators ... the "Heavy Duty" one is removable (note the latches on top), there's a hand-wash agitator beneath it. Also appears to be a Rim-Flow. Worthy collectible IMO.
nice set of pics from the owner, one tale tell mark of tranny issues is the staining on the lower part of the backboard from the slinging oil.......this one is clean...