Pennies are small, copper-colored coins used in the United States and several other countries. In the U.S., a penny is worth one cent and is the lowest denomination of currency. They are often used for making small purchases or as change in transactions. The front side of the penny features a portrait of Abraham Lincoln, while the back side displays various designs, including the Lincoln Memorial. In recent years, the production and use of pennies have been debated due to their low value and high cost of production. Many people find them inconvenient, leading to discussions about eliminating them from circulation. Despite this, pennies remain a part of everyday transactions and are collected by some as a hobby.