That is what I call a DEFDAM - Definitely Damaged Circulation wear and tear and Environmental Toning damage to the surface. No it is not a Mint Error. Welcome to CoinTalk
Hi Welcome to ct! Imho, your coin looks heavily damaged. Or what @paddyman98 likes to call it a defdam definitely damaged.
Yes, WELCOME! I have a different TLA (Three Letter Acronym) for those.. BTH or Beat to Heck! Don't let that deter you. Once you get the fever, you'll be hooked. It's modern treasure hunting!