I now have the 1976-D cent and am now quite confident that it was etched by one or more acid-impregnated fibers. I'll write it up for Coin World as a cautionary tale.
Mike Diamond very informative Coin World Weekly article, explanation and outstanding photos of corrosive effects on coins! Thank you for delving into this unusual post mint damage.
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