Damaged coin or minting errors?

I have this coin that has very clear lines and markings, but I am unsure if they are the result of environmental damage or minting errors? Would anyone be able to help me find out?

Damage.

PMD, yes, no errors.

Okay great! Thank you! That will help me identify them in the future I hope. I actually have a few other coins I want to get advice on- should I create a new post or perhaps post them right here? 

make a new post

Thank you 😊