1916 Buffalo Nickel error/possible DDR?

Hello everyone. I did some research online and didn’t find any info to match what I’m seeing on the reverse of this coin so let me know what you think.

-One of the buffalo’s back legs appears to doubled and has a knee.
- some of the letters in The United States of America appear to be doubled (particularly the “N” in United and the “TA” in States
- possibly doubling by the buffalos ear?

I’m still very new at this so go easy on me please :

 

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Odd markings in that area are usually the result of a clash.
Here is an overlay. you will see that the eye cheek and forehead detail clash with the same area as the extra knee that you are seeing.
Here is an overlay.
https://www.maddieclashes.com/five-cent-overlays/