possible plating bubbles if its a zinc cent, or die chips if its copper. Does it weigh 2.5 or 3.1g? And the "back" is called the reverse. And its a Cent, not a penny.
its a large date, phila...as for other errors wait for the experts. did u weigh it? they may want to know that.
go on to another find this may take time. 3.1 means copper...good... now find 1982 zinc, 2.5 weight. then only 6 more to go and you'll have a set. cool
Yea what experts? I'm no expert.. just a specialist Looking at the steps on the Reverse it kind of looks like a bit of dried adhesive. But the picture is not clear enough.
maybe a drop of nail polish or superglue then ? need closer, clearer, in-focus image. from up top and at an angle