Cents were still copper in 1990. Copper is quite soft. Your cent has been struck in such a manner that the date looks out of place.
No. Just damage.. Please create your error coins questions only on the Error Coins forum.. Not the What's it Worth forum... Just a suggestion. There are many minor mint errors out there to learn about. But most have very little or no premium at all. Worry about if it is an error or damage first.. Value last.