I don't see how a washing machine would do that. It looks like some sort of damage. You can see a circle on both sides where the devices have been flattened.
I see no signs of damage. It's either a grease strike or a slightly weak strike. I favor the latter hypothesis, based on the uniformity of the encircling band of weakness. The reeding would not necessarily show the effects of a strike that is only a little bit weak.
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