1979 D Mint Mark Lincoln Penny. Minted In Denver, Filled Mint Mark. Circulated. And ungraded. The 1979 D Lincoln penny is rare for any coin collector. The penny is made of copper and is circulated and uncertified. This is a great opportunity to own a piece of US coin history without worrying about its condition. Please check ✅ out all my coins listings. Thank you RVCOINSCOLLECTIBLES.