I was looking through some 77's philadelphia minted Lincoln cents and I came across this one, I compared it to a bunch of others but none looked like this, so I went to the PCGS website and checked out some photos on there and still none with this beard.
I know it may look normal at first glance but if you look to where the arrow is pointing I'm talking about this very detailed groove and not the beard line itself.

Finding and discovering modern Canadian doubled die varieties since 2018.
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Modern Canadian Doubled Die Varieties - First Edition
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