Well, honestly I think you have the better eyes because I didn't see it in the first place.
When I first saw it I said "Oh wow! What is that!" So I brought it up in the image editor to zoom in on it. I was almost a bit disappointed when I saw what it was. But it will only make a true find taste so much better when we find one.
I am so glad you have better eyes than me...looked at it ..and was like..no ..no way..has to be something that we can disprove that it is floating over the headstone.lol ! thanks for clearing that up !
That's a great catch, I looked right over that and didn't even notice it.
And to answer your question as to what it is, its a street sign for a 4-way crossing. Yellow diamon shaped sign, black cross, and a yellow rectangular sign underneath.