Okay this is something I have never seen before. The absolute center of the penny has what at first glance looked to be a drill holes. After taking a more thorough like under magnification this hole 1: Is perfectly centered 2: unlike a drill bit the point is pertruding outward instead of inward as a drill bit would do. Is this some type of punch error.? The last two images are of lincolns cheak. Any idea gentlemen or women?
as long as you can recognize it as damage then all is well. I didn't realize it was concave or convex or whatever on my cell phone .. nothing a spherical concave or convex head grinding bit wouldn't do.