I have a real Very Rare 1983 D Penny. And no, I did nothing to said Penny. It looks like silver, nickel, aluminum, or steel. But solid, legible, with D stamp, and authentic.
Sorry, but it s been plated after it left the mint. It's not an error. Cents have been plated for decades as HS chemistry experiments. You can also purchase plated cents as a novelty. They have no collector value