This coin is a 1987 Lincoln Cent with a Memorial Reverse, minted at the Denver Mint, as indicated by the 'D' mint mark. It belongs to the United States currency system and is valued at one cent (1¢). The coin is composed of copper-plated zinc, a common material used for pennies since 1982 to reduce costs. It has a diameter of 19 mm and weighs 2.5 grams. The 1987 Lincoln Cent is notable for its high production numbers, with a mintage of approximately 4,879,389,514 coins, making it widely available and often found in circulation. The design features the iconic image of Abraham Lincoln on the obverse side, and the reverse displays the Memorial, representing the Lincoln Memorial in Washington, D.C. Given its relatively high mintage and modern production, the 1987 D Lincoln Cent is typically not considered rare, and its value remains close to face value unless presented in uncirculated or pristine conditions. Overall, this penny reflects both American history and numismatic tradition, serving as a staple in coin collections and everyday transactions.