Picture of a man ‘speaking on a cell phone’ in the 1940s goes viral

This picture is going viral on social media. It shows a man in a black and white 1940s photo appearing to be speaking on a cell phone.

What makes the photo puzzling is that cell phones weren’t invented until 1973 by Motorola but they didn’t go public where people can actually purchase it for use until 1983.

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Does anyone have an explanation for it? Manipulated image, perhaps? what do you think?