1998 D Lincoln Defective Planchet?

I would say it's a lamination error. they are classified as an error minor errors and don't bring a good premium unless they are an extreme case.
JAZEC

Thanks guys. I thought laminations only occur on copper coins. This one is zinc.

The plating is separating from the zinc core. I am not sure what to call it:-)

A lamination error usually implies that a solid planchet has a bubble or an impurity in it that causes the metal to peel up and separate from the main body of the coin.

I might tend to call this coin one with the plating separating but I can se why it might be called a lamination error.

I think the terminology might still be developing on this type of thing.

Thanks,
Bill