I had the same Lady Kenmore and was the best dishwasher I ever had. I paid $150 from my Sears as a repossession in 1975. Only bad thing was no air dry.
The dishwasher for sale is probably more closely to Robert & Fred's LK that hs the window--given the turquoise racks. Pictured like what's in the Sears ad, they'd have to be avocado colored racks. I'd say mid to late 1960s dishwasher.