1960-D Kennedy Half Dollar: This coin is made of 90% silver and has a mintage of only 1.2 million pieces. It is one of the scarcest 50-cent coins from this era and can be worth up to $200 in good condition.
1964 Kennedy Half Dollar: This coin is the last 90% silver 50-cent piece minted by the United States. It has a mintage of only 1.3 million pieces and is worth around $100 in good condition.
1968 Kennedy Half Dollar: This coin is notable for being the first 40% silver 50-cent coin minted by the United States. It has a mintage of over 150 million pieces, but it is still worth a small premium over its face value due to its silver content.
1976-S Kennedy Half Dollar: This coin is the first 50-cent piece minted at the San Francisco Mint since 1955. It has a mintage of just over 1.5 million pieces and is worth around $40 in good condition.
2002 Kennedy Half Dollar: This coin is notable for being the first 50-cent piece to feature the "Westward Journey" design on its reverse. It has a mintage of over 560 million pieces, but it is still worth a small premium over its face value due to its unique design.
It's important to note that the values of coins can fluctuate over time, so it is always a good idea to check with a reputable coin dealer or numismatic reference to determine the current market value of a specific coin.