If the coin is a US Kennedy half dollar dated 1974 it has no silver in it and is face value.
11.34 grams & 30.6mm diameter
It's not silver. None of the 1974 Kennedy halves are silver. Just spend it.
Yes, Kennedy's face is still on the half dollar.
There seems to be some confusion here. Kennedy is on the half dollar, while Lincoln is on the penny. A 1974 Kennedy half is worth 50 cents. A '74 Lincoln cent is worth 2 cents for its copper content.
If there is no mintmark on your 1974 Kennedy half, that simply means it was minted at the main mint in Philadelphia. Very common -- no added value in circulated condition -- perhaps a dollar or two for a nice uncirculated one.
Liberty half dollars were made up till 1947. Your coin is called a Kennedy half dollar and is only worth 50 cents.
As you can tell by looking at the edge, all 1974 half dollars were made of copper-nickel rather than silver.
Half a dollar
Unless it's a Proof or Mint State coin, it's face value. None of the Kennedy Half dollars made for general circulation after 1970 contain any silver.
There's no US half dollar with those dates. The only dual-dated halves were the Bicentennial coins that carry the dates 1776-1976If you have a copper-nickel half dollar dated 1974 it's only worth face value.