Actually, that was @paddyman98 and while he wasn’t nice, which I’ve told him before, he was still right. It’s a logical fallacy to assume that just because someone is mean they’re wrong.
Your Cent is a 1982 Large Date D Mint Mark Copper.. The rare one you need to find is the 1982 Small Date D Mint Mark copper which only 1 has ever been discovered. Here is the info - https://auctions.stacksbowers.com/lots/view/3-7WIR5