While the provided context consists of links to numismatic resources, it does not contain specific value information for the 1972 half dollar. Based on general numismatic knowledge, I can provide a comprehensive answer.
The value of a 1972 Kennedy half dollar depends primarily on its condition and the mint where it was produced. It is important to note that half dollars from this year were not struck for circulation in silver; they are composed of a copper-nickel clad alloy. Consequently, their base value in circulated condition is typically just their face value of 50 cents.
For coins that were minted in Philadelphia (no mint mark) or Denver (a "D" mint mark), their value remains at face value if they show signs of wear from circulation. Even in uncirculated, mint state condition, these coins are quite common. A typical uncirculated 1972 or 1972-D half dollar might be worth a few dollars. The value only begins to rise significantly for specimens in exceptionally high grades, such as MS-65 or better, as determined by a professional grading service.
There is a notable and valuable error variety for the 1972-D half dollar known as the "No FG" variety. On this coin, the designer's initials "FG" (for Frank Gasparro), which are normally found on the reverse below the eagle's left leg, are missing. This error occurred due to excessive polishing of the coin die. A 1972-D "No FG" half dollar can be worth a significant premium, ranging from $10 to several hundred dollars depending on its condition.
Additionally, the San Francisco Mint produced proof coins for collectors, which bear an "S" mint mark. These 1972-S proof half dollars were sold in government-issued proof sets and feature a mirror-like finish. They were not intended for circulation, and an individual 1972-S proof is generally valued at a few dollars.
