1996 Quarter Lamination Error?

Another from my Dad's hoard.

I know the semicircle on the obv is roll damage or something to that effect - I'm looking at the rev though and see areas that appear to be copper showing through.

The edge of this coin has slot machine type smoothing of the reeding but I can see that the layer toward the rev doesn't show much if any of the nickel layer.

Also, this has a 5 to 10 degree rotation as shown by the orientation of the first rev pic.

I have added more images because I noticed the quality is poor on the rev. image. I also added closer detail images that have arrows pointing to where the copper is showing. Ignore the discolorations - they are not what this is about.