Unusual 1978 Nickel

[Tuebits]

I found a 1978 Nickel with a reverse side which I think has an extended right side of the building. How would I classify this, if it is an error? See the attached photo.

Tuebits

[diamond]

If you're referring to the slight smearing at the edge of the building, that would be machine doubling.

[Tuebits]

Now that I check the rest of the building, each right edge does have the flat extension. Thanks. I'd only seen it with letters before.

Tuebits