I came across this today. It brings back memories of the 1980D shadow S that was removed from the RPM list. This is, I am sure, just wishful thinking of a shadow D south east. It did cause me to slow down and check it closes though.
You'all do understand that I am not calling this an RPM; RIGHT?!? Would you have taken a second look?
I looked, twice and I enlarged it. I'm not impressed as my imagination lets me see a D, larger than it should be about 4:00 o'clock, but my common sense tells me otherwise.