Brandon, first welcome to Coin Talk!! You have a 1964D nickel with a damaged mint mark from years of circulation! There isn't anything special about it!
If somebody paid that much for a similar nickel the seller is laughing all the way to the bank to coin an old phrase.
* Any links or references where one sold for $10,000? * How was it described? * Did the say it was an error? If so, what kind? * Was that the sale price or asking price?
Brandon check that little box at the top of the page that says alerts. We have been tagging ya in one of your previous threads from 2016. 2011 d dime clip error | Coin Talk
You saw one sell for this much, or you saw one advertised for this much on Etsy? There is a huge difference! Normal pocket change is regularly advertised for astronomical amounts on Etsy.
Brandon, you have been a member here for almost 6 years. If your coin had what you believed is a valuable error, clear photos (full image, not thumbnail) would have been nice. As shown, you nickel is worth just that, a nickel.