1980 D Penny on Dime Planchet?

[DCoop1968]

So, I have this 1980 D Penny that is the same size as a dime. It weighs 2.8 grams. As you can see, the letters are cut off on the obverse and the reverse...

[DCoop1968]

I can see a number 5 under the 6 of 1986. It also looks like 1986 is doubled....

This is a 1986 S Proof Lincoln cent. I can see a number 5 under the 6 of 1986. It also looks like 1986 is doubled.


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