I Don't Know What It Is. Looks Like Roosevelt's.

This may have been done with a hydraulic press. Someone pressed the obverse of a dime into the obverse of a cent. It looks like it was done with some precision and skill as it was kept round and centered. Maybe it was in a pipe or other "homemade" collar when it was pressed. The reverse of the cent was flattened by the pressure because it didn't have a die in place to keep it from being damaged.

It's PMD, but it's interesting PMD.

I agree, interesting PMD.

Agree with all above. Fun curiosity.

This is what happens when you take a perfectly normal cent, a perfectly normal dime, and squeeze them together in a high-pressure device of some kind. It might even have been done in a hydraulic press, of the kind an amateur medal-maker might use to make their medals.

The way that the dates and mintmarks of the two coins have been lined up, implies to me that this was no accidental arrangement of randomly selected, randomly aligned coins. Someone deliberately tried to make something like this. That the two coins are 13 years apart (1980 and 1993) also implies that whoever made it, wasn't trying to make some kind of "fake mint error", since there's no logical reason why a 1980 cent is going to be flying through the air and somehow getting stuck in the dime presses in 1993.

You can see the reeds on the outer edge of the dime. (note image #4) No way this is legit, because of the reeds seen squashed into the coin.

Can't be a mint error with a newer date on the altered coin, the 30 year old coin it was supposed to be struck on.

Intentional post mint damage.

A fun find.

Comical to think someone would go to such lengths to create an obvious fabrication.