Penny

The phrase "just a penny for your thoughts" might place Abraham Lincoln, the sixteenth president of the United States, on your mind. Made of pure copper during most of its existence, except during the years of World War II, the Lincoln penny has been minted since 1909. Its design is based on a photographic portrait by Anthony Berger taken on February 9, 1864, in Mathew Brady's Washington, D.C. studio.