I found this in a roll of pennies! I was going to post in coin roll hunting but since it’s an error I figure I’ll post it here. I’m going to post some other errors I have also, and then some that I don’t know if they are or not.
http://www.error-ref.com/blanking-and-cutting-errors/ Yours can be seen especially well on the obverse over UST in "TRUST" and the flattened rim area down and to the left of the memorial on the reverse.
And today's "one-thing-I-learned-from-CoinTalk" is the Blakesley Effect. I had to look it up. Thank you!