1972 D error?

Im still learning so if someone please can tell me if this an error? It looks to me like the date is double in some spots the liberty the we trust and not sure what the coin was stuck with to me it looks like the image from the back of a coin the building . The back is also 2 toned .

 

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The only issue I see on your Cent is the Lamination Peel.
That area of missing copper. It's a Mint Error.

I see absolutely nothing else of what you are seeing and asking about.
No doubling
No image of the Lincoln Memorial
No toning

 

So what is the bar thing going across the coin?

 

A Lamination Peel
http://www.error-ref.com/lamination-loss-after-strike/

 

That's the lamination peel.

 

I've gotta write that down so's I'll remember it.

L-A-M-I-N-A-T-I-O-N P-E-E-L

 

One more time
Lamination peel.

 

It's a banana peel!

..

 

Nice lamination error. It peeled off and that's a nice coin.