No that is not a RPM. That is a plating bubble issue. Repunched Mint Marks ended in 1989. Your Cent is 1990 so it's impossible to be a RPM. No clip niether. That is a hit so it is damaged.
Sir do you mine to look I have 1971 D nickel I got this for change but when I look in the back and search I can’t find like this. Thank you
Goodmorning my idol I miss you! Thank you for your comment I always love reading your comment... have a good one !
If you had read the posts by the original poster you would have seen that it's not possible for an RPM on a1993 cent.