By 1980, the Kennedy half dollar didn't contain any silver, and the coins from the Philadelphia mint that year tend to be worth about 60 cents to $110, depending on condition.

A 1964 Kennedy silver half-dollar could fetch up to $5,200 on the open market as long as it is in pristine and "uncirculated" condition. IrishCentral Staff @IrishCentral. Jan 09, 2024.

The Kennedy half dollar was first minted in 1964 in the wake of the assassination of President John F. Kennedy -- the coin's obvious namesake. It was a commemorative issuance made in Kennedy's ...

The Kennedy half dollar was first minted in 1964 in the wake of the assassination of President John F. Kennedy ... the Type 1 variant — comprised of 90% silver — was only issued in 1964.