Lincoln error or damage

It weighs 2 grams and is much thinner than it should be. I have no Idea what it could be if anything. I just noticed the reverse blank spot matches with the obverse portrait. Any help would be very helpful..







If I was half as smart as I am dumb Iwould be a genious
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San Diego, CA
the eye appeal is not there and it seems to be a common date that
was made in the billions? so there must be all sorts of errors like that.
Unfortunately, there isn't a lot of demand for these errors. I've seen them sell anywhere from $10 to $100. Here's one that sold recently on eBay, in an ANACS slab and a wheat cent to boot. It didn't even cover the slabbing costs. (Dang... maybe I should start looking at the Errors category again...)