1959 Penny No Mint Mark Lamination Error?

From half of 1982 and onward, cents are copper plated. Since this one is before 1982, it is copper. It is an alloy of copper and is never plated. How can its cladding fall off it it never was cladded.

Looks like a small lamination error.

I agree it is a lamination. I recently came up with a theory on why we see laminations on coins. I wondered if during the upset process, it makes the blanks that have slight imperfections in them, loosen during this process? After/before the coin is struck, they may loosen and fall off leaving what we are finding today. With the zinc cents we see less because of the purity of the material and not being mixed with anything. Then plated after they run through the upset process.

I got them from the U.S. mint site.

So I finally called the right error ; I'm going to add this one to my collection! Interesting animation Coop, a real eye opener thanks for posting. Thanks to everyone as well for the knowledge, I learned quite a bit here today.

Ruben