I can see it, but not sure it is another D or some kind of blob. It seems pretty far off for an RPM. I had an 84-D that looked similar and it turned out to be one of those blisters that are common on the zinc cents.
This coin suffers from deep corrosion. The zinc core corroded through the copper shell, and likely through a split in the plating right around the mintmark causing it to bubble upward. It's worth one cent.
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