Hey cj I have one similar only more ripple effect to me there must be a different reason I just saw one that they have on I think worldcoin.com? That they say was caused by cloth and valued at almost 300 dollars try and heat a penny with a torch if it's composite it will melt if it's copper takes alot of heat I tried to duplicate this effect and found it impossible on my coin you can see ripples going different directions obverse and reverse you can see my coin at 1964D Lincoln Memorial cent wavy steps have a good one






















