While the provided search result information is incomplete, I can give you a definitive answer based on expert knowledge. Unlocking the value of a 1974 half dollar comes down to one crucial detail, and it’s a point of common confusion for many people.
The vast majority of 1974 Kennedy half dollars are not made of silver and are only worth their face value of 50 cents. These standard circulation coins, produced at the Philadelphia (no mint mark) and Denver (a "D" mint mark) mints, are made of a copper-nickel clad composition. By 1974, the United States had long stopped using silver in its circulating coins. So, if you have a 1974 half dollar from your pocket change, it almost certainly contains no silver.
However, there is an important exception you should look for. In 1974, the San Francisco Mint produced special collector versions of the Kennedy half dollar that are composed of 40% silver. You can easily identify these more valuable coins by looking for a small "S" mint mark on the front (obverse) of the coin, just below Kennedy's portrait.
If your 1974 half dollar has that "S" mint mark, it is indeed a silver coin. Its value is primarily tied to the melt value of its silver content, which typically fluctuates between $3 and $5, depending on the daily spot price of silver. Collectors might pay a small premium above this melt value for a coin in pristine, uncirculated condition.
So, the key is to check for that mint mark. No mint mark or a "D" means you have a standard, 50-cent coin. An "S" mint mark means you've found the valuable 40% silver version worth several dollars.
