Kansas Proof Quarter - doubling?

Sometime ago I noted an odd feature on a 2005 Kansas State Quarter that is encased in a Proof Set. I had purchased 6 clad proof sets that year. While looking at them I noted that one Kansas Quarter in one of the proof sets had "doubling" which is most notable at the forehead, nose and chin of Washington. Looking at the quarter through a 20x loop other areas also show some doubling. I have looked at all of the other Proof Quarters I have in sets and have found no similar features on any other quarters. As a novice I have no idea what caused this issue or if this is even a coin of interest but would be thankful for an opinion from someone with expertise in errors and/or varieties.
Thank you!

 

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I'd say it's a reflection on the case/lens or MD.
Can you post a picture of the entire coin?

 

If it is doubling, it'd be MD. Looks like it is flat and shelf-like.

 

MD

 

MD.

 

Thank you for all the feedback and enlightening me. It does appear to be flat and shelf like, therefore Machine Doubling.