Collectible coins encompass a variety of types, including historical, commemorative, and bullion coins. In the United States, the five-cent nickel, notably the Jefferson Nickel, was first issued in 1938 and features President Thomas Jefferson. Coins minted in San Francisco often have distinguished marks or proofs, with specific years like 1981 showcasing unique minting characteristics. The half dime, an earlier five-cent piece, was produced until the mid-19th century and is of interest to numismatists for its historical significance.

Item Denomination Series Year Mint
1981-S (San Francisco) Jefferson Nickels 5¢ (Five Cents, Nickel, Half Dime) Jefferson Nickels 1981 San Francisco