Coop is right. It is called ghosting and is usually seen on large thinner coins. It is very common on mid twentieth century English and Australian large pennies. It is rather unusual to see it on US cents but it does happen.
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