Collectible coins, including U.S. coins, are often sought after for their historical significance, rarity, and unique features. The five-cent nickel, known for its depiction of Thomas Jefferson, was first issued in 1938 and has various designs, including the Jefferson Nickel. The half dime, introduced in the late 18th century, was a silver coin that ceased production in the 1870s. The 1999 San Francisco mint produced collectible versions of coins, including proof and uncirculated strikes, enhancing their desirability among collectors.

Item Denomination Series Year Mint
1999-S (San Francisco) Jefferson Nickels 5¢ (Five Cents, Nickel, Half Dime) Jefferson Nickels 1999 San Francisco