Looks like a Broken Die Post has filled the inside of the mint mark, causing a void in that spot on the die. This is very common though, and it doesn't carry a premium.
The coin has that look because I used a Flash I thought it would make it look more detailed so that people could see the P in it being closed but I think it did help but yet it changed the color. Also I found A post on ebay selling what I thought was about the same coin with the same error for $25. https://www.ebay.com/itm/1984-P-Qua....m4335.l8656
Disclaimer: While a tremendous amount of effort goes into ensuring the accuracy of the information contained in this site, Coin Community assumes no liability for errors. Copyright 2005 - 2026 Coin Community Family- all rights reserved worldwide. Use of any images or content on this website without prior written permission of Coin Community or the original lender is strictly prohibited. Contact Us | Advertise Here | Privacy Policy / Terms of Use