In 1947, Don Lutes Jr. bought lunch from his high school cafeteria and noticed something strange about his change. One of the pennies he received had a copper tint to it. Normally, this would be fine for most pennies, however, the date on this penny was 1943. Lutes Jr. knew that pennies from that date were always made of steel. This was due to the Military's needs during World War II.
An 1894 S-Barber dime sold for $1,997,500 at an auction in Tampa in 2016. The 1894 S-Barber dime is one of the most highly prized U.S. coins for collectors, along with the 1804 dollar and the 1913 Liberty Head nickel.