Introduction Tim Herr With Extreme Penny Error. Input Needed.

My name is Tim Herr. I've been an avid coin collector since I was ten years old and now Fifty nine, long time. I should sell some off my coins but I have a hard time parting with them. I've always been able to figure out an error coin. Probably because understand the mechanics of the coin press. I am factory trained on Abdick printing presses and four complete lines of copiers, fax, high speed duplicators, laser printers pretty much all office equipment including computers, with thirty years experience in the field. I have a 2008d penny that I'm having a hard time figuring out exactly what happened to it. Under light with magnification the very thin edges of everything on and rev has lifted an outline around it and the inside is pushed in. Looks neat you see light and magnification. I'll upload pictures of it and maybe somebody else has seen something like this. And maybe a guess of what it might be worth.