Welcome to CT @Bryan Dillard and thank you for posting full image photos of your coins. Your 1990 cent certainly looks DDR in UNITED STATES but I'm no expert, so call upon those that are to opine. @Fred Weinberg, @paddyman98, @JCro57, others?
Thanks for that @furryfrog02. Not a cent collector. I was wondering why I saw the doubling just in those two words.