I have a couple of these also and posted a thread some time back. I have a severe one like yours and a much milder one. The issue was only on one side.
When I posted the severe one, maybe half the people thought it was Struck Through Grease and about half thought it was PMD caused by heat and blowing air or acid and blowing air.
Now that I have found the second milder one, I am more of the view that it is Struck Through Grease. the milder one is definitely not PMD I would say.
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