I received my 2015 Eagles today, and noticed that a few had a very wide rim (on the obverse only) around the L of Liberty, and a very narrow rim around the T of Liberty. I did a 1200dpi scan and greatly reduced the contrast to avoid glare. The coin shows up fairly accurately, and in hand, the difference is quite obvious. I don't think there's any connection with the rare "clip" variety; mine only suggests that the die did not strike the planchet squarely. Again, you are not seeing a shadow there. In hand, the L/rim is about half again as wide as the T/rim, say 1.0mm versus 0.7mm.
Yeah, that's accurate; I meant the same thing by saying "did not strike squarely..." Among error collectors, it may not mean the same thing.
I didn't even consider this. This is what I based it on. If you hadn't mentioned this, I would have asked to see a photo of the reverse.
I looked through the rest of them, and there's about a dozen like that, one more pronounced than the one I scanned, but still no big deal. You have to wonder if those were the precursors to the "clip" variety, or was the clip strictly a planchet defect, already in place before any die ever touched the blank? I was impressed by one other small detail; the reeding is so sharp and precise you could get a paper cut, except it would be a silver cut.
A clip is strictly a planchet defect. (and a clip ISN'T a variety, it is an error.) Your coins are the result of the obv die not being precisely centered in the die cup. That isn't a very big deal because it happens a lot. (close enough for government work)