The Kennedy half dollar is a popular coin among collectors. It was first issued in 1964 to commemorate the assassination of President John F. Kennedy. The coin has a unique design and is made of a copper-nickel alloy.The size of a Kennedy half dollar is 30.61 millimeters in diameter and 2.15 millimeters thick. It weighs 11.34 grams. The coin has a reeded edge, which is a series of grooves that run around the circumference of the coin.The Kennedy half dollar is slightly larger than a quarter, which has a diameter of 24.26 millimeters and a thickness of 1.75 millimeters. It is also slightly heavier than a quarter, which weighs 5.67 grams.The size of a Kennedy half dollar has remained the same since it was first issued in 1964. The coin has been minted in both proof and uncirculated versions. The proof coins are made with a special process that gives them a mirror-like finish.The Kennedy half dollar is a popular coin among collectors. It is also a popular choice for gifts and commemorative items. The coin is a reminder of President Kennedy and his legacy.The size of a Kennedy half dollar is an important factor to consider when collecting the coin. Knowing the size of the coin can help you determine its value and authenticity. It is also important to know the size of the coin when buying or selling it.