The value of a 1963 US half dollar depends on its condition and rarity. In general, a 1963 half dollar in circulated condition is worth its face value of $0.50. However, uncirculated or mint-state 1963 half dollars can be worth significantly more, especially if they are rare or have special characteristics. For example, a 1963 proof half dollar in PR-65 condition can be worth up to $100 or more. It's always a good idea to have your coins evaluated by a professional numismatist to accurately determine their value.