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Message:: [QUOTE="Michael Bromiley, post: 3429944, member: 100138"]What is up with this 1975 D Lincoln cent I found.   It has "bumps" or roughness all over both sides.  I have seen bubbles due to gas, but mainly on zinc pennies.  At first I thought it was environmental damage but when I zoomed in I noticed that you can still see the die lines, and cracks going over and through the bumps.  I tried to zoom in a crack on photo #11. -- anyway would like some input Thanks,  Mike[ATTACH=full]910722[/ATTACH] [ATTACH=full]910724[/ATTACH] [ATTACH=full]910725[/ATTACH] [ATTACH=full]910726[/ATTACH] [ATTACH=full]910727[/ATTACH] [ATTACH=full]910728[/ATTACH] [ATTACH=full]910730[/ATTACH] [ATTACH=full]910732[/ATTACH] [ATTACH=full]910734[/ATTACH] [ATTACH=full]910723[/ATTACH][/QUOTE]