All I see is a normal circulated coin as far as no mint mark it was minted in Philadelphia they didn't put a mint mark until 2017.JMO Dave
@Rukee1 I see you are new here so first, welcome! What you may have heard is that there are coins that are supposed to have mint marks but none are present. These are from Proof Sets though and are very hard to find. There are also times when a mint mark is missing due to a grease or debris filled die, but these are not worth much. And as said above, Philadelphia cents did not have a mint mark until 2017 and it was a one year thing.