This coin is a 1970 Lincoln Penny, also known as a one-cent coin, featuring the Memorial Reverse design. It was minted at the Denver Mint, denoted by the 'D' mint mark. The coin is composed of brass and has a weight of 3.11 grams and a diameter of 19mm. Produced as part of the Lincoln Cents series, the coin is part of a large mintage of 2,891,438,900, making it a common find among collectors and the general public. The obverse of the coin displays a portrayal of President Abraham Lincoln, while the reverse features the Lincoln Memorial. Due to its high mintage, the 1970 D Lincoln Penny is typically valued at face value of one cent, though uncirculated or well-preserved examples can sometimes fetch a small premium among collectors. The coin is a piece of American history, representing both the economic and cultural significance of the Lincoln Penny in the United States.