The steering wheel of the taxi cab is on the wrong side.
On ocean liner when Mrs. Jacoby is feeling ill, passenger briefly walks by in background, casting flat shadow against what is obviously just a painted backdrop of a lengthy cruise ship deck.
In a Movie with Transcontinental Jets when Mrs Jacoby returns to her Brooklyn apartment they show a street scene in front with a car passing but then behind the car there is a Horse drawn wagon. Horse drawn wagons in 1960s Brooklyn? I don't think so.