I am reaching different discussion forums to find out about this Bicentennial Quarter its pretty interesting, noticed the S Mint mark resembling the number 8. After observing the others and comparing the mint mark, its just really different.. Here are a few photos. Tell me what you think..
Your mint mark is known as a Filled S mint mark. It’s not a mint error, just a variety. This was common on the 1979 Susan B. Anthony Dollars. It’s in the Red Book. Welcome to CT.