Note how on this reverse the steps are in the wrong area?

But note the marks on the columns that are incuse. That is damage.

On a DDR on Memorials you can see a raised area inside the bay on the bay with the statue. Note they can vary in size and they are raised up from the bay area:


These are referred to as bar cents on this bay.
On the 1994 cents you can find some with extra columns:

Note again how they raise up from the bay. (not incuse)
Incuse marks may happen on coins in every location, but are often just circulation damage. (Coin contact with other coin and other things.)


















