Smiling Orb Appears Above the Word "Holiday"

Photo date: December 19, 2015. Photographer: Mark Mahin.

The photos below were taken in Grand Central Terminal in New York.  In a previous post I showed 5 different photos showing a floating orb appearing in front of the word "Holiday" in a sign at this station. I now have two more examples of such a thing.  Here is the first one, which seems to show a smiling orb face.

Here is the second one.

Here is the revised composite photo showing by now 7 different cases of some mysterious orb hovering near the word "holiday" in a sign.