All joking aside, there IS a rare variety of this coin. I kid you not. As I have an example of it.
Basically, the variant shows doubling to the letters HILL, also his lip and his eyebrow caused by hub doubling. This was reported in the UK's `Coin News' in the late '90's. I also remember conversing with the author of the articleabout it on rcc, and how the very first coin I looked at turned out to be one. Sadly, none since

I suppose that you could call it a `hub doubled eye' variety.
I also have a rather superb specimen that developed a pretty strange pattern of toning to it just after a trip I made to Graceland. If you close your left eye and let your right eye go out of focus then maybe you'll see the spectral image of the old owner. It's spooky!
Of course, i've had one or two people say that it's artificial toning on the coin. Hah! what do they know. ...........