For avid coin collectors, here is a 1980 Lincoln Penny without a mint mark weighing 3.1 grams. This copper coin with a red-brown color and a business strike type features the Lincoln Memorial and the words "In God We Trust" and "Liberty". It has circulated in the market and has a grade of XF 45. This penny also has a variety of features such as a wide AM and a large date, making it a unique addition to any collection. Although it is uncertified, it is still a valuable piece of American history.