Sutton's Fractal

This picture with an apparent UFO was (allegedly) taken in 1932. Ufocasebook comments the following on the photograph;
"1932-St. Paris, Ohio. This picture was taken of a man named George Sutton near midday May 1932. We can see that it was in 1932 from the license plate on the automobile in the photo that accompanied this shot. The unidentified flying object in the picture could not have been a street lamp, simply because there were no street lamps at the time. There are no power poles or power lines visible anywhere in this picture. This picture shows a vintage automobile. The owner of the photo album says there were no electric street lights along this road in those days. Nobody has been able to account for the dark object seen over Sutton's left shoulder in this photograph."

Here's a blow-up of the object.


Hmm, where have I seen this shape before?