Collectible coins, such as the 1971 Kennedy Half Dollar struck at the San Francisco Mint, are often sought after by numismatists due to their historical significance and unique minting characteristics. The Kennedy Half Dollar, introduced in 1964, commemorates President John F. Kennedy following his assassination. The 1971 version is notable for being one of the first produced in a clad composition instead of silver, making it less valuable in terms of melt value but still significant for collectors focused on the series or mint errors. Coins from the San Francisco Mint often carry a "S" mintmark, indicative of their production location.

Item Denomination Series Year Mint
1971-S 50c 50c Kennedy Halves 1971 San Francisco