Any chance this 1997 has a DD in the earlobe? . I see something protruding from the bottom of his lobe.
Looks like it might have slight, minor doubling to the ear lobe…please post a better close-up of the ear…make sure it is clear and in focus…
Zinc cent with copper coating, so could be a gas bubble, but I see no indication of it being close to a "double ear" Lincoln.