Ancient Filter-Flo
My favorite washer would be the any of the 1957-1959 GE Filter-Flo machines. I like the copper-patina filter pan with the pink or seafoam green agitator cap that matches the Flo flume.
My Mom had a 1960 model, which I fondly remember, but it had "only" a plastic filter pan. After eight years of service, she gave it to my Grandmother, who used it for another twenty years, until she died.