I had wondered that, too, Bob, but I have a 1959 magazine ad for the Imperial 'Spots-Away' Turbo-Spray dishwasher and it looks almost identical to the one in this listing. I think this may have been the last year for a Frigidaire dishwasher with a timer in the lower panel and a push-button starter. The Canadian 58 (most likely a 57 carried over) still had the chrome trim on the top edge of the door but by 59 this was gone.
[this post was last edited: 1/22/2021-11:33]