The United States half dollar coin, sometimes referred to as the fifty-cent piece or simply the half, is a United States coin worth 50 cents, one-half of a dollar, and is the largest U.S. coin currently minted, in both size and weight, being 1.205 inches (30.61 mm) in diameter and .085 inches (2.15 mm) in thickness and is twice the weight of the quarter. The coin depicts the profile of President John F. Kennedy on the obverse and the U.S. Presidential Seal on the reverse, but the design has undergone a number of changes throughout its history. It has been produced every year since the conception of the United States Mint in 1794. The only other U.S. coin that has been minted as consistently is the cent.