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<p>[QUOTE=&quot;desertgem, post: 2232914, member: 15199&quot;]The copper plated zinc cents post-1982 are plated, not clad assembly like dimes, etc. , but are still struck in a collar. The collar can become deteriorated, dirty, or misaligned. The plating is probably correct thickness 99.999% of the time. But there are incidents of thin plate, thick plate, and even incomplete ( zinc exposed) plate.</p><p><br /></p><p>From the photo, the white arrows might indicate a collar, plating, or combination of both that there was not enough metal to fill the collar to make a smooth edge. It does appear to be a slight plating problem, (no value in my mind), but PMD should always be considered.</p><p><br /></p><p>My best guess</p><p><br /></p><p>Also When I teach the vision section of Anat/Physio. I stress that what the brain thinks it sees is not necessarily what information the retina is sending down the optic nerve. ( Search &#039;blind spot&#039; to see an example). The brain does an equivalent of &#039;photoshop&#039; and &#039;stacking&#039; as it interprets what it is processing based a large amount on what it has seen before ( visual memory) and what other areas of the brain has been processing. And new inter-neuron connections can be formed so that we see &#039;things&#039; we are expecting or hoping for , rather than anything that might or might not be there. There is a learning curve for everyone, so after a while a person becomes better at seeing &#039;new things&#039; and the brain has other information to determine if it is really a rock smiling at you or just a geological formation. If a person is desperate to see a smiling rock, they might miss important geological formations.[/QUOTE]</p><p><br /></p>

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